Good comparison. I own both a Nemesis (a.k.a "Wizard") and 2 Pains and you're right about their characteristics being similar. I think the Pain rolls a bit earlier and flips a bit harder in the backend (depending of course on the drilling)....a really nice combination of power and length.
Either choice would be a good one. I know this, my Pain drilled stacked leverage hits like a mac truck! In fact, sometimes I wish it wasn't so aggrssive (that's the reason I bought another and drilled it for length and a slightly milder backend).