Lofton or Weatherspoon

I have the roster space to pick up 1 of these guys, but I'm not sure which to pick up. I know I really can't go wrong with either guy, but does their position change their value? I've always heard that MLB's tend to get more tackles, but Weatherspoon, at the strong side, has been able to exceed Lofton's numbers in the middle. So who do you think is the better option?

Thanks

Technically, Weatherspoon sees most of his snaps on the weakside. Even though I believe Atlanta runs their defense as LOLB and ROLB (i.e. linebackers don't switched sides of the field based on offensive alignment). I really see these guys as having very similar numbers. I think Weatherspoon could finish the year with more tackles, but Lofton may edge him out on assists. Lofton is probably the safer bet.