Bug about a player on the client

Hi,

I'm link34200 on NA server and i just encountered something really strange. someone i don't know added me. i asked who it was and went for his profile to try to have an hint but some "bug" about this player makes me uneasy (no response but it s just been 15min). i don't know if it's the client or what but when my cursor is on the person it says that "ImJohnConnor" is level 69 and a diamond player but when i go to his profile it says that he is level 14 (and unranked obviously) can someone help me look into this? i have a printscreen if needed. thanks.