Not sure where you got your stats, but I just went to ESPN Stats for 2013 and actually the number of Kickers who kick 92% or above was almost 2 times what I said for career. It was 11 last year that average 91.7% or more. 91.7 rounds out to 92.
That is just wrong. The highest career fg% in history is 86.4% by Mike V. So how can the top 5-6 starting kickers in the NFL have a career average between 92% and 95%?
Shane Graham is actually 7th on the all time list, although I'll admit that those numbers can be misleading get at times. He certainly isn't as bad as you were somehow trying to twist it. Like I said before the best kicker from last season has a career fg% worst than Graham.