Alright, so I recently replayed Prototype and rewatched/replayed Resident Evil, and one question sticks in my mind... which host is stronger? One the hand, Mercer has the more versatile arsenal and can fight at any range, but on the other Wesker is physically and mentally superior to Mercer.
Personally, I think they would fight each other to almost a standstill. Whoever would have more stamina by the end would consume the other, but the two viruses would try to take over each other and end up killing the remaining host.
That's my two cents on the matter... so... Opinions?