Busiek's referred to as a continuity porn writer with good reason. While there were a lot of things I didn't like about his run, his handling of things like that godawful Crossing storyline were homers. I tend to prefer his handle on characterization as well (most of the time, anyway, his way of reviving the Vision/Wanda/Wonder Man triangle that should have been left alone made me grouchy), especially in works like this where different timelines are chucked together and he gets to play with it a bit (Present!Hank and Present!Jan's "Oh, crap" reaction to Yellowjacket was priceless).