Nark... Jesus, man. You do know the p90 was buffed along with the XL, right? Their bursts both contain 15 bullets, at which 5 will hit at range. Also, 10mm AP (6/7 damage mod) far outperforms 5mm AP (2/3 damage mod). I know you desperately want the G11 to be good, but casually spreading misinformation isn't the way to go about it.
Though yeah, the lower AP cost for the p90 does it no good, because where you should be getting 4 bursts out with 12 AP, you can only burst 3 times then reload. Either weaken it a little and revert it to 12/48 (where 4 bullets will hit at range), or keep the current burst and up the magazine size to 60.