To show how out of one another's league these two are:
Who wins? These two are both weapon masters. X has the use of every subtank and all of the weapons you see there.
Don Krieg has all of his weapons and whatnot that he keeps in his armor, including the bombs and poison, and the exploding spear. Who takes this? I think X'll annihalate him, but I just put this up for a certain someone who should know who he is.