Stats failing to log

[Ringlets]

Basically, i've been playing GTA IV online more than offline, racking up some pretty decent scores all across the board from one of the highest times on Deal Breaker to a pretty impressive kill steak on teamdeath match (8vs8, i got about 45+ kills in one life). Aside from all this, everytime i restart my ps3, my rank has either taken none of my recent scores into effect, or has taken me down a rank all together. Any one know why this is? Im a tad annoyed seeing as my friend who has played half the time as me is 300 positions higher in the charts even though i've played more and better than him.

 

Also, side note, anyone noticed how the top 5 players for the ps3 version are all cheating fa**ots, seeing as one guy has $1mil and has only played 2 matches?