I think it would be fine at 14.0, even with only r77s. Having 10 r77s and the best thrust to weight of any Russian flanker would simply make it the best in terms of overall flight performance. Just having much better launch speed when shooting your missiles will give them plenty of range. Pair that with the amazing n011m radar, it will dominate close range engagements, maybe even better than rafale. All this while having 14 missiles, although 4 have to be r73s