Drew Bledsoe was never a great QB. He was a very good QB in the middle of his career with some great games sprinkled throughout.
Depends on your definition of 'great'.
My assessment of Bledsoe includes:
-He absolutely elevated his team above its overall talent level many times. I no longer remember the exact stat, but its something like this:
As of around 1999-2000 a total of 8 teams in NFL history had made the playoffs with bottom 5 running games, and 4 of them were Bledsoe-led Patriots teams. The Bledsoe teams were the only of the 8 the win a division, win a playoff game, or get to a SB. Its ludicrous to state that the 94.96.97.98 Pats were good enough to make the playoffs without Bledsoe, and hard to infer that many if any other QBs could have handled having to carry the offense as much as he was asked to and been as successful as it hasn't happened with any other QB.
-The playoff run to the SB in 1996 was done with Bledsoe as a passenger on the Parcells ship, led by the D. Bledsoes opportunity at 'greatness' came in that SB and he did not have a good day.
-Bledsoe is overrated because of the stats he amassed due to the system (ie throw more than anyone else) but underrated in that the system made it harder for him to be efficient. i.e. Total stats overrated him, per pass stats, and ratings underrate him
-I find it foolish that many ignore his total lack of mobility in assessing him as a QB.His lack of mobility negatively affected his play, just as his arm positively affected it. To discount the mobility as a negative would be the same as saying his stats should be discounted because of his arm.
-If you tell me you will pick a game situation and down and distance randomly and I pick the QB to execute it, Bledsoe will be high on the list. If you tell me it will be a pressure situation against a good team, he will be much lower on the list than a lot of QBs with lesser stats.
-If you give me a medicore team who is going to need to throw the ball every down to win, I'll take Bledsoe as my QB and accept that I can be competitive but not excellent. If you tell me I have a Championship caliber team that lacks a QB, I'm not choosing Bledsoe as that QB.
-If tom Brady never showed up, Patriots fans would have a different view of Bledsoe. I know I would. I would feel much more highly about him and value the level of success he brought the team, and not arrogantly feel that Championships are all that matters, and Bledsoe is not a Championship QB. However, Brady did happen, and I suppose I'll never go backward in that.
Given my predelictions, I would rank the following QBs during the era from 1990-now loosely his contemporaries) ahead of Bledsoe:
Brady
Kelly
Marino
Manning
Elway
Warner
McNab
Aikman
Favre
Brees
Young
<from memory so i'm sure i missed a few>
and I would put a few youngsters on the path to be better but havent played long enough
Rivers
Roethlisberger
That is way too many contemporaries that I rate better for me to use great next to Bledsoe's name.