No, it doesn't depend. Saying someone can't vote for a candidate because of A, B, and C isn't the same as saying you can't vote for the other candidate because they are also guilty of A.
I agree with you that Trump is a bully and a jerk. I would submit that in that department Biden is not much different. So that's a wash. That's "A" I get it.
Biden's pretty clearly a kleptocrat. His corruption with the Ukraine thing is apparent to anyone looking at it even-handedly. I'm not sure I'd say that Trump rises (or rather sinks) to that level.
Biden's made his 2A position pretty clear - he intends to take it away. Trump has been pretty solidly in the 2A corner
So what are "B" and "C" for you that make Trump so intolerable that you would prefer to be disarmed? Or do you not believe that Biden means what he says?