Most people are going to have a 5.9 or less because you need to run in RAID or have a SSD to break the 5.9 barrier. A Raptor might break 6.0, but there are few hard drives fast enough to break 5.9.
Nope, my 300GB Raptor gets a 5.9 as well. Next lowest was a 7.2 I believe.
Two and a half years ago I thought everyone agreed that the windows performance score/index was rather useless. Why bother? D: