So while juke is a very good EPT for a wings that can have two EPT's I would have to say bad no it is resoundingly not as beneficial as having the focus would be for your offense. When you think about it juke only really has value if the ship that you're targeting doesn't have a focus token to spend on defense. If they have one then juke isn't really worth anything. Having the focus not only adds additional insurance for Gemmer's defense but you can also use it to increase the number of hits that you roll when attacking which will far more reliably provide you a greater benefit. So unfortunately I would argue that push the limit use a absolute necessity on Gemmer Sojan.
As far as it being worth replacing a green squadron pilot with Gemmer that entirely depends on the type of squad that you were making. If you were trying to do the wing man build I don't think it would be a good idea as it decreases the value of that built and it's effective ability to do it's thing. But in any other a wing squad I would definitely recommend that you try taking him. Gemmer is the only cost-effective named A wing pilot that you can easily fit into most squats without having to give up the ship and his ability is great and pretty simple to use. If you take him with auto thrusters he is 25 points with push the limits as well so again he's very easy to slot into most lists.
Honestly if you were looking to include a a wing as a blocker for a rebel squadron camera is not a bad choice to perform that role. Yes he cost more than a prototype pilot and has a higher pilot skill but his ability is very very very useful and will help them stay alive into the late game and he's greater squad cost will encourage your opponent to waste more shots trying to kill him so it's a method you could try.
When using Juke you do not have to spend the evade to get the offensive capabilities. When you have a focus on offence, that means you do not get the benefit for any attacks PS 5 or below. So if you run this Gemmer, evading should be the only option.
If you have PTL then you have the option to Focus and Evade every turn, which could be better. This build has more flexibility which a-wing players love.
In general, the PTL and Autothrusters would fit into any a-wing build. However, I am running the Juking Gemmer to try to burn off focus tokens so I can make life easier on the Opportunist/Crack Shot-GSP's that were posted a while back. I think that both Gemmer's have their place. Depends on which one works with each build.