I think this question is more like 'Who was more likely to have sex on the Capitol steps, Clinton, George W Bush or Ross Perot". The answer is that it is vanishingly unlikely that any of them would.
Assassination (of one politician by another) simply isn't in the American system. Even then.
Might one of them have challenged AJ to a duel? Maybe, although, given AJ's practice in duelling, that would have been next to suicide. Might they have punched him in the nose? Yes, but that would have led to a duel, see above.