I was just going to agree with KyleATMn, but the more I look at the pics the more it the mismatch stands out. Yes, it could be better and we have definitely seen worse. It comes down to what you guys can live with if your SC says it's WITHIN SPEC.
Your wife is fine with it. It bothers you.
I'm particular about paint so I wouldn't accept it, and I think buyers of used MYs down the road will look at all the mismatched white MYs out there and assume they were involved in collisions and repainted poorly by a body shop.