Donaire? NO. First he will have to beat the kingpin at 122 in Toshiaki Nishioka . In which I don't know why that fight is not getting made. Then afterwards he'll have to move up in weight to be consider P4P best. And at 126, he'll have to beat John(although he might be on that retirment list). Then it's the young lion in Gary Russell that will welcome Donaire. That would be a great fight.

Bute? NO. Could never be consider P4P best unless he fights Ward. Not being in the Super 6, makes his chances less. But if Bute run through the Super 6 opponents and Ward, then he could be!!! Thats Abraham, Kessler, Dirrell and upcoming Froch.

Ward and/ot Dawson? Frontrunners! If this fight happens, the winner will be top 5 today.

Gamboa? NO! He had his chance to get in the top 5 but choose to sit out of the fight with Rios. Saying that, frm 126(his last fight) to 140(where he was suppose to fight Rios), it's a lot of fights that if he cleans out those divisions, it would be hard not to put him at #1.
1. Adrien Broner
2. Antonio DeMarco
3. Henry Lundy
4. Jorge Linares
5. Timothy Bradley
6. Vernon Paris
7. Humberto Soto/Lucas Matthysse winner
8. Orlando Salido
9. Juan Manuel Lopez
10. Danny Swift

Jus to name a few possible fights.