I'm glad for Chris, I hope he goes to #1 again. I remember originally thinking this whole era would be a flop because of "Wall to Wall." I really think that could've gone top 20 if his label had released it to iTunes. Oh well, I'm glad I was proved wrong
and as for Rihanna, I'd still say top 5 is possible, due to the fact that airplay is still rapidly increasing and she just reached the top 20 on pop. I think she'll have a "Forever" type run, where he had high first week downloads, and then months later as airplay increased his downloads did too
since it's on her debut album.
A Milli doesn't deserve to be #1!