In every source I've looked at, the YT-2400 carries 50% more cargo tonnage than the YT-1300 (150 tons vs. 100 tons). In this game they are measured in capacity, and the YT-1300 has 165 while the YT-2400 has 'only' 140. Should the YT-2400 have a capacity of 240 (rougly +50% of the Yt-1300)?

Well, there are two ways to look at cargo, I suppose. There is mass, and there is volume.

From page 152, Encumbrance doesn't just measure weight, but also bulk. So encumbrance is a sort of abstract combination of weight and size and shape and weight distribution. So, I would say that while the tonnages are accurate from the other sources, the YT-2400 is smaller than the YT-1300 physically, and therefore, because its holds cannot quite accommodate the same volume of objects, it got a smaller rating, despite the fact that it's engines and repulsors might be more powerful, so that it can actually handle more tonnage, if the material is smaller and more dense.

That said, if you want to house rule it for your game, that is between you, the GM, and the other players. Do what makes sense in your game, and makes it fun for you and your players.

I've also seen a number of YT-2400 floor plans, including the official one found in WEG's Stock Ships sourcebook, and I've often questioned the YT-2400 having that much storage space given how cramped the interior is in comparison to the YT-1300.

A lot of the earlier cargo capacity numbers came from WEG, and I'm pretty well convinced they literally just made stuff up at the time and didn't put much thought into the numbers. Case in point, Vader's Super Star Destroyer was marked at only 8 kilometers according to WEG, but just watching ESB shows you that it's a lot bigger than that.

Plus, the 2400's armor is way thicker too, right? I'm sure that plays into the weight capacity as well.

I'm wondering if the YT-2400 having a reduced cargo capacity in EotE compared to prior versions is a similar instance to the HWK-290 being reduced in size for the X-Wing minis game.

In short, FFG went to Lucasfilm to get the "factual data" on various ships, and what they got in regards to the YT-2400 justified it having a slightly lower cargo capacity than the YT-1300.

I'm wondering if the YT-2400 having a reduced cargo capacity in EotE compared to prior versions is a similar instance to the HWK-290 being reduced in size for the X-Wing minis game.

In short, FFG went to Lucasfilm to get the "factual data" on various ships, and what they got in regards to the YT-2400 justified it having a slightly lower cargo capacity than the YT-1300.

WEG made up the factual data tho.

The fact is that the encumbrance rules make no real sense when applied to vehicles. Unless blaster pistols weight 600 kg each, there is no way a Yt-1300 will come close to its mass limit with pistols.

A cargo vessel is designed to carry cargo. Tons of it. That would equate to rather extreme amounts of encumbrance. The ships in EotE should have been given a tonnage rating, and then maybe an encumbrance capacity for hidden stuff.

The long and short of it is: GMs do what you and your players think is fun.

WEG made up the factual data tho.

WEG also said the Super Star Destroyer in ESB and RotJ was only 8 kilometers long, when just comparing it to a regular Star Destroyer using footage from the movies shows the SSD was a lot bigger.

So "WEG made it up first" doesn't automatically mean it's correct or that something else hasn't come up to override what WEG initially published. Case in point, the size of the Executor was canonically placed at 19 kilometers and given the type "Executor-class Star Dreadnaught" in a Jedi Counseling article written by Gary Sarli, with those changes being made with Lucasfilm's approval.

WEG made up the factual data tho.

WEG also said the Super Star Destroyer in ESB and RotJ was only 8 kilometers long, when just comparing it to a regular Star Destroyer using footage from the movies shows the SSD was a lot bigger.

So "WEG made it up first" doesn't automatically mean it's correct or that something else hasn't come up to override what WEG initially published. Case in point, the size of the Executor was canonically placed at 19 kilometers and given the type "Executor-class Star Dreadnaught" in a Jedi Counseling article written by Gary Sarli, with those changes being made with Lucasfilm's approval.

There are also other deviations, such as the standard armament of a YT-1300 (one gun vs. two, single cannon vs twin) or the weapon mount of the Ghtroc 720 (WEG says fixed forward, FFG says all arcs - so a dorsal turret).

WEG made up the factual data tho.

WEG also said the Super Star Destroyer in ESB and RotJ was only 8 kilometers long, when just comparing it to a regular Star Destroyer using footage from the movies shows the SSD was a lot bigger.

So "WEG made it up first" doesn't automatically mean it's correct or that something else hasn't come up to override what WEG initially published. Case in point, the size of the Executor was canonically placed at 19 kilometers and given the type "Executor-class Star Dreadnaught" in a Jedi Counseling article written by Gary Sarli, with those changes being made with Lucasfilm's approval.

There are also other deviations, such as the standard armament of a YT-1300 (one gun vs. two, single cannon vs twin) or the weapon mount of the Ghtroc 720 (WEG says fixed forward, FFG says all arcs - so a dorsal turret).

Exactly.

So just because the old WEG stats said one thing, doesn't mean that FFG has to slavishly adhere to those stats.

Granted, when doing the EotE conversions over at the Gamer Security Agency for the Equipment Lab series of articles, I opted to stick to previous stats (WEG and WotC) when and where I could, since I don't have a direct hotline to the fact-checkers and archive-monkeys employed by Lucasfilm. There were a few points where I took a liberty or two (mostly in the form of educated guesses given how little hard data for EotE ships I had to work with at the time), but I tried to stay true to the prior spirit of the ship in question where I could.

But as noted, FFG isn't bound by that same restriction. The stock YT-1300 sporting an extra laser cannon turret, the JumpMaster 5K only costing 55K credits, and the Luxury 3000 yacht having a 120K price tage are just a few examples of FFG changing the previously established WEG data to suit their game.