Who would wins from these fights in ww div?

[PackosCotto]

Cotto vs berto : i got cotto by wide sd!
cotto vs mosley II: i got cotto by close sd!
Cotto vs marg II : I dont see marg beatin cotto again, cotto by wide sd this time.
Cotto vs pacquiao : Cotto by of tko, manny pacquiao is in over hes head on this.

mayweather vs pacquiao :mayweather by wide sd! too much defense!
mayweather vs berto :mayweather by ko
mayweather vs marg :Mayweather by wide Split decision
mayweather vs cotto :Tuff one but i got cotto by close SD!

Berto vs mosley : Mosley koes berto
berto vs marg : Marg koes berto
berto vs pacquiao :Pacquiao koes berto lol

Who would win and why?
Who is the true welterwight king?
state ur opinions..