So historically what will will be viewed as Pacquiao's "weight"

[boxasmash]

Which weight will he be defined in? If he's looking so great now at WW.

e.g SRL = Welterweight, past prime Middleweight
Roy Jones = Light Heavyweight
De La Hoya = Welterweight
Felix Trinidad = Welterweight, not as good Middleweight

[Stoppage]

Probably, a super featherweight.

[boxasmash]

Maybe, the majority of his big name wins are there but he is so much better at 140+

[Chups]

Featherweight IMHO.

Just because he is a member of the Fab 4 (or 4 M's)

Morales
Marco
Manny
Marquez

[Rorschach™]

Featherwelterweight!