Apple's competitors have always had them beat on the spec sheet. It's the user experience they can never match.
The WePad looks like a fun device to tinker with, and I see potential for resellers or commercial use, but it's not playing on the same field as the iPad (yet).
What I'm most curious about in the tablet space is if Linux, with Android, MeeGo, Chrome OS etc. will be able to shine. As many tablets will be ARM based, there will be less competition from Microsoft. With a decent distribution platform we might see a situation where developers will be able to reach more devices with Linux than with iPad/iPhone OS. Especially from a global perspective.