As I read the "more", I read it along the lines of. . . if you were holding both in your hands right now, and had to chose one or the other (not that you had any previous bias to one or the other), then more people would chose the iPad because it has more features.
This excludes those who are looking just for an eReader and those who are looking for an iPod Touch+ experience.
We will know in a few months when the first sales figures are announced (or if they aren't announced). Till then, it really is just speculation.