It of now, has been since almost half a century now actually!!
I have compared them, but have you??More are you actually aware of the physics involved in the stabilization of sub-caliber rounds (aka APFSDS) and the effects of rifling on the same??I seriously doubt you are, going by your nearly fanatical and hellbent opposition to the acceptance of a fact that is as real as you are!!Rifling can never give more accuracy to a sub-caliber projectile with such a large L
ratio usually found in a typical kinetic energy penetrator, in fact, it actually has a negative effect on the accuracy of the same!!Only if you had cared to find out the science involved with it, you would've got it by now.