New account ratings can flucuate wildly due to high RD values (rating deviation) until they have played enough games to stabilise the rating.
A skilled player would be expected to rise quickly and depending on the strength of their opponents could potentially have a high win percentage.
What would you think about a player that joined Nov 14, 2014 (Today's Nov 17, 2014) has 57 on line games going, has won 15 out of 16 games they've played, and shot up (added) over 200 points to thier rating just since your game started? Just sayin'. Smells a little like fish to me.