I have a <2 year old daughter right now and while it may be a bit soon to compare, I think she would benifit from having something that she wants to focus on for more than a couple of minutes. Right now she can be actively playing or passively consuming, though the latter does not interest her much and she just wanders off or ask for attention. Some interactivity might do well at this age.

On a side note I don't own an iPad nor intend to. Maybe a wii (she's already pretty curious about the tv remote control). However, I'll probably hold that off and let her enjoy the real world for a while.