Dude you are drunk, go home.
P4 Armor 180
T34 Armor 150
T34 pen 120-80
p4 pen 120-100
p4 reload 5,5
t34 reload 6,5 (6,2 may patch)
Chance for a p4 to pen a t34 66-80%
Chance for a t34 to pen a p4 44-66%
And these are just the base stats, iirc P4 gets armor buff at vet2 while a t34 never gets a penetration buff.
T34 has much better AI (may)
Someone calculated that the may patch mgs of the t34 are as good as the p4 mgs + the upgrade mg. Given the fact that the p4 main gun has faster reload, slight better aoe and slightly less scatter the p4 is still better AI unit.