A lapsed reader isn't exactly the same. They're seeing an adaptation, coming back to something they knew, and finding it unfamiliar. Some will roll with it without question or look up why he's different. Others will assume that the entire title must've been rebooted to further jive with the movies (an even bigger danger in the wake of the Nu 52). And some will, like vyn said, see it as a marketing stunt.
Thing is, Marvel and DC both do such a shitty job at getting new and lapsed readers to pick up anything that they can't stand to lose anyone. A new reader may or may not stick with it. A lapsed reader more likely will if whatever chased him away isn't an issue.
Rollo, sadly, you're the most correct of all of us. There are no new readers. There should be, and any idiot who dropped out of kindergarten after failing it for the seventeenth time could come up with better strategies than either Marvel or DC could.
