The way I look it is it has nothing to do with loving Gwen or MJ more. The thing Peter wants most to not have made the mistakes he has made. Hence in HOM, Uncle Ben, Captain Stacy, and Gwen were all alive. In Peter's perfect world, he didn't fail them and they didn't die. And I think everyone can agree if Gwen hadn't died, Peter probably would've married her or at the very least not broken up with her and got with MJ.

> > If the marriage never happened an old continuity problem of Spider-Man gets actuality again. I asked myself that since Norman Osborne returned after the clone story: How could Peter ever accept that Osborne got away with the murder of Gwen Stacy? If the marriage never happened Gwen would have stayed the love of Peter's life. Mary jane did not get the love of his life but after the marriage. So if they never married, he wouldn't have forgotten Gwen that easily. So he would be after Osborne. BND never can explain THIS.