Debatable, as we don't know the true extent of the stealth technology being incorporated within both systems. Even when the final version is developed, we won't know their abilities for a very long time.
Nope 80% of stealth is shaping and Sukhoi already have admitted that PAK-FA is LO rather
than VLO design.
We have had Russian fan boys saying for years that a new stealthy design will come out but it never did.