I tested T62A personally, it has slightly less fast acceleration due to weaker engine compared to T54, BUT(!) it's maneuverability is crazy, it rotates with it's body faster than T50-2 trying to circle T62A, that's just the body, not mentioning the turret!
Regarding french tanks, I'm seriously thinking of selling Lorreine right after patch, Soviet meds are way funnier to drive without constant fears of getting full damage from some Gw-Panter a second after you stopped to make a shot. French never allowed you to make mistakes, battles are always nervous and hard thinking. But after they were just moved up 1 tier with balancing down some charecteristics, it now looks like hard working to play them instead of having fun from a game