ok im a newbie so...

a PFR percentage of 1% corresponds to AA (0,5%) and KK (0,5%)...feels like a clear fold

If the PFR percentage of the rock was slightly higher lets say 3 % (=AA-QQ +AK) my action would probably have been different. getting between 2:1 and 3:1 pending on BB and limpers' action I would call

The case for not rasing is that it would probably drive out the BB and limper, resulting in 2:1 odds (neglecting the risk of a re-raise). Against a Rock with AA-QQ+AK you are a 2:1 underdog. Being slighlty passive i would just call...

L