Rebels as in Star Wars Rebels. The Gozanti's an Imperial ship (yet oddly missing from FFG's perceived Imperial order of battle. The article says it goes straight from VT-49 to Raider)
The Gozanti is hardly the same role as a CR-90. There's a huge difference between a TIE carrier that parks at the edge of a fight, and a point defense corvette that wades into a fight and murders the crap out of enemy fighters.
The Gozanti is a better analog to the GR-75, being a lightly armed transport rather than a dedicated anti-fighter combat ship.
As we looked at ships that were larger than the VT-49 Decimator, the next possibility was the Lancer-class frigate at 250m
The Gozanti is skipped. They state the next ship up in size from the VT-49 is (prior to the development of the Raider) the Lancer.
Just remember, when they were likely developing the Raider, Rebels wasn't released yet. And I don't think they were able to get the info on the Gozanti in time for this release. Besides, it would be more of a Transport size than a Corvette size.
Also, they wanted the wedge shape since they ruled out Star Destroyers.