that's not a bug.....
the npc just say exp of your poke win
example:
magikarp 16M won +32752650 exp = He Have 100lvls more = 116
Jugglypuff 13F won +32752665 exp = She have 100lvls more = 113
that's not a bug just have more lvls and when u think is a bug please post it on
http://46.105.24.210/forumdisplay.php?13-Bug-reports please..
Good Luck