Third, obviously.

Four is crazy and Three has a entire military force behind him with every vehicle he wants😂

Seven solos by getting the universe to turn aginst all their past selfs and then go into hiding. Whilst they do win it is a phyric victory as they know that soon of latter the universe will kill them multiple times.

Who would win if they're all equal? Well... none of them, I guess. It's definitely either none of them, or it's Pertwee. Hai!

I never understand the polls the oldest doctor would because he’s been all the others age = experience

@Tobias Pendlebury well seven is total immoral and will do anything for the treated good the others however have very strong morals and would not sink to sevens level.

Also it is ambiguous how much the Doctor remembers of their life before 8 as 8 kept getting amnesia.