Even if Bush finishes out his term with low ratings, he will still have had high ratings a little more than half of his total tenure in office. That's more than a lot of Presidents can say.
How do you come to that conclusion?? His ratings were average till 9/11, then went up were high for about 2 years, then dropped by early 04 where they hovered a little above or below 50 for a little over a year then started to drop in late winter/early spring of 05 and have sucked since. He will have had high ratings for about 2 and a half years, a little below and above 50 for about 1 3/4 years and crap for 3 3/4 years.