Hmmm...
I think that it will take a hit in the graphics department.
There can't be as many things going on on the screen at one time as on the PC version. I really don't know, though.
There's another Sims game coming to the DS, and it's cutesy and full of big-headed avatars.
BTW, here's a link that does work. It's the IGN article on Spore.
http://ds.ign.com/articles/692/692432p1.html