Pacquiao chooses Mosley over Marquez?

So, he chooses grandpa Oldsley over Marquez and I wonder why? I think Manny knows that since Oldsley is surely past his prime, and he'd be an easier opponent then Marquez. Why not face someone tough like Martinez, Marquez, or Berto? Out of all of those fighters who has a potential to knock out Manny, he choose a grandpa. Wooohooo, another boring fight approaching, and I'll predict a 1st round TKO by yours truly, Manny Pacquiao. *Sigh* -.-;;