That makes sense.Now, as to the question of Marvel being interested more in 616 than UU? Well, it's not for the sake of "well, let's care more of this one because we like it more" or whatever. The regular Marvel Universe is a vast one. There's so many books and events going on because it's a huge universe, that it's going to get way more attention than the Ultimate Universe regardless how the UU is doing.
The Ultimate verse is only what? Three ongoing books with minis on the side? It's not a very big place, so no matter what, it won't get as much attention as the 616 verse.