On your profile you say you're FIDE 1400 and your chess.com online has been 1735. I guess to get those extra 15 points you'd need to improve your FIDE 200 points.
Hehe, but anyway. Maybe you're talking Norway chess again. This site has an international user base. In Elo (FIDE) B class is 1600-1799.
Chess.com online ratings can be inflated 100-200 points and even more. A 1600-1799 Elo player could be over 1900 or 2000 chess.com online. Of course it depends how seriously they take it.
i hope anyone found my posts instructive...