Did the mindwipe affect Ben? He was sort of dead at the time. If so what does he think happened during the clone saga?
He and Kaine know Peter's identity so they weren't as affected as others but they seem to have forgot Peter was married to MJ? Or am I wrong on that point?
My guess is that he has the same memories as Peter. The timeline\reality was altered and one day it may fall back to what it was or never be touched upon. All depends on the editors and overall creative control of Marvel to let something like this get changed.
The Disgruntled Greek