Pure conjecture, but I'm guessing Bulldozer will be > than i7 900 series but < than SB. And since Intel's enthusiast version of SB is coming out late this year, AMD will once again be 2 CPU's behind. Also, since Bulldozer has been so slooooowww coming out Ivy Bridge may actually be released before AMD's next generation of Bulldozer, putting them 3 CPU's behind.
I hope for competition's sake I'm wrong about this, but AMD better hope that Bulldozer is AT LEAST equal to SB or it'll be a LONG Q4 this year!