Is there any conceivable way to prove that Christianity is wrong?

It doesn't matter whether God exists or not. A sadistic, bloodthirsty, killer Jesus-God who drowned, plagued, and slaughtered millions (more than Hitler); conspired to have his own kid/self brutally beaten and killed; hardened hearts so he could torture people; repeatedly COMMANDED his followers to kidnap, , hurt, and kill others; and created an eternal concentration camp for torturing Jews and others with the 'wrong' beliefs - is WRONG. Period.