Oh boy, this again T62a: pros; Great turret, better than the 140, Lazer acurasy, better base pen on pramo and standard, better terain resistance and traverse speed, and 7 degrees of gun dipression instead of the 140s 6.
Obj140: pros; Better top speed, ap for standard shell, better hull and side armor because of angles, lower profile.
T62a: cons; larger, less hull armor, apcr instead of ap(this can be a pro or a con depending on the situation), Slower top speed.
Obj140:cons; Weaker turret, less pen, 6 degrees of gun depression, less traverse and terain resistance
p.s. Dont say wz121 i think that the russian ones are better because i like the extra dpm this discussion is for picking between the 2 tanks, not adding others that are better