I think this is pretty premature question of comparison because Pacquiao hasn't even reached his prime yet. While MAB and Erik is safe to compare because we know they've both reached their peak already. Anyway, we can always guess in our own point of view, but just remember PAC is a very very fast learner so add that to your PAC prime learning curve direction and i hope you got the picture of what he would become if he would reach his prime.