I don't know if this is a bug or not but I can prove what I'm saying. In some PS3 match summaries on Battlelog there are also stats from PC players.
See here for an example match
http://battlelog.battlefield.com/bf3/battlereport/show/35341990/4/352764909/
Click the player name LOWREDCOBAIN on top and on that profile it mentioned as a PC player and the stats are all gone. This is not only for this particular match, there are several other matches emphasizes the same conclusion. I read this question, but these match summaries gave me the doubt.
Other match summery example:
Best Answer
You must have hit some Battlelog bug.
According to BF3Stats that player LOWREDCOBAIN is PS3 player.