No. You're comparing an open source project to a vendor-supplied distribution. MeeGo 1.0 is not directly comparable, it's a common base enabling vendor-supplied (proprietary) applications using Qt. At this point we're not even sure how much of a UI this thing is going to have on day one. You most likely won't be able to just slap a MeeGo 1.0 image onto your N900 and start making calls, sending text messeges and browsing the web like you can with Maemo 5. If you think this open source project with its first release is going to produce better experience than Maemo 5 then you're fooling yourself.

Edit: If you want a comparison, then something semi-accurate would be Maemo 5 is to Harmattan as Windows 7 is to Windows 8. We've pretty much have some vague idea how Harmattan or W8 might look like, but we're sure as hell thinking they'll both be better than their predecessors.