I get the observation Geisha is making and it's a good one. I challenge anyone to find a player on tour, past or present, that made four consecutive grandslam QFs and wasn't ranked in the top ten. Good luck with that! I think that's the point the thread starter was trying to make, she's not saying that Serena should be ahead of the other girls who play more of a full schedule- or that Serena doesn't deserve her ranking. She's just saying that the results don't mirror the ranking. And after you go searching you'll see that almost every player, with the exception of Serena, that has showed that kind of consistency in the slams always has a higher ranking. Instead some of you are too hung up on trying say that her results "really" aren't that great...
The truth is it's unusual for a player to have that kind of consistency in the slams and not have a top ten ranking. Of course her ranking makes perfect sense when we take into account the amount of tournaments she's played. Players that show that kind of consistency in the slams sually have better results in the smaller tournaments as well.
The logical thinking is that if you're good enough to show that kind of consistency in the slams, then you should be good enough to win more titles- easier titles, at the Tier 2s and Tier 1 events.
So again, the threadstarter is wondering if there are other players that have had good results where the ranking doesn't really show it. I'd venture to guess that it usually happens the other way around.
Most of the time a player has that 'surprise result', whether it's QF or a SF at a slam, the final of a Tier 1, or a Tier 2 title, and as a result their rankings skyrockets. The ranking becomes over inflated and doesn't really represent the player accurately. It's like that one fluke good result is an anomaly but caries with it enough weight to distort that players ranking.
In Serena's case it's the opposite, but again, it's no mystery why. It's interesting nonetheless though. Then again, you could make the argument that her consistency in the slams was the very thing that allowed her to remain in the top ten without defending her slam win from the previous year. For the most part, she was able to keep her top ten ranking for a while on the strength of her consistency in the slams and Miami.