No, the J-10’s linear acceleration at high is very slow. This is almost the opposite of the Rafale, which has a similar IAS. The Rafale can go from ground level to high altitude and then reach Mach 2 in almost 2 minutes and 10 seconds, while the J-10 takes 3 minutes and 30 seconds, and this is under conditions without any weapon payload.
Actually, the J-10’s IAS in the game is 1500. During the development server period, an issue to reduce the J-10C’s VNE was approved. The maximum permissible indicated airspeed calculation is 1350 × 1.05 = 1417. If its VNE is indeed reduced, wouldn’t that just make the J-10 even worse in the game?