stock vs. stock then yes, i see what you are saying.
pcmark04 is an all around benchmark, not a CPU test. I could have an FX-55 system topped out...but running on an MX-440 and lose to a Celeron system with a 6800U...the gfx card is what REALLY makes the difference.
What you might want to compare (being more CPU dependent) is something like super_pi. I believe my fastest time for the 1M test was 35secs, but i don't have screenies anymore.
Your system all around is definetly better than mine...i won't argue that. You have a video card 10X better than mine and 2X the RAM. If i had a 6600GT and another 512MB i might be able to match your pcmark 04' score (or hopefully beat it lol). But as it stands with 512MB or RAM and a stock 9200 64MB card my top score in 04' is 4203. So all-in-all i'm behind ~800 points due to half the RAM and a very old gfx card.