You should see all ringtones independent of which phone you choose, but you will only see the wallpapers optimized for the actual phone. If you have a phone with an HD-screen there's no point watching through wallpapers made for the Nokia 5310, they won't look good. That is why.
Why he was chosen: SoSoSingh is not new to ZEDGE. He's been a member since 2004 (!) and was quickly appointed as moderator back then. He worked as a moderator at ZEDGE for several years, before he threw in the towel back in 09. He took a break, but is now back and ready to help out.
We're happy to see him back and hope every one of you will be quick to accept him into the moderator team.