So I was playing a private split screen match with my friend and when we went to play public matches I was the same level and had the same stats.
Bummer! You're definitely not the first. Apparently some kind of weird glitch involving split-screening.
wireless ps3 controllers?
2 into 1 usb ?
Can you please let us know what console you are playing on? What are the affected gamertags/ psn id's? Can you please let us know more circumstances of how this happened? So you said you were playing in a private match, who was player one who was player two?