This is true on all platforms... there's always going to be some redundancy - in the case of the iTunes Music Store, the redundancy is incredible.

Even on the N810 or N900, I could use: Evince, Kchmviewer, PDF Reader, FBReader, or other apps to read PDF files. Or for weather, there's OMWeather and Foreca. Browsers... Opera, Fennec, Mindfield, Arora, Midori, Tear.

You get my point. Each and every one of these stores inflate their numbers by just counting the heads, not by counting where they overlap. If there's an app that does what you need, then use it. Cool part... if there's an app you need on Maemo/MeeGo, develop it.

I'll just use what suits my needs no matter the platform. The rest of those numbers mean nothing to me.