To start with, we've got the initial problem of the Y-Wing being a base to work around, since it is technically official due to Edge.
That being said, wow. I mean, sure, the X-Wing is the premier ship of the Alliance. But it isn't supposed to be better in every possible way. And what we have now? It is.
Somehow it is more heavilly armored than a Y-Wing or B-Wing, both of which are supposed to be more durable and heavily armored in the fluff. For cripes sake, the B-Wing is a Bomber meant to go after Capital Ships! While the Y Wing is a "Fighter Bomber" noted as "resilient and heavilly shielded, but slow and ungainly compared to other Rebel Ships" (See Wookiepedia)
So I think it is definitely time to look at the relative stats of all the fighters, with a fine comb, and at least make them fit the fluff. Indeed, one case is the Y-Wing, in the OT alone when it gets hit, it generally takes two to take it out after shields go down. While the X-wing goes up in one.
Then of course, once we have some more representative options for the various -Wings, we'll probably need to go back over the TIEs again too.