While I think Graham deserves to be in the conversation, here are some things to note about his case.1. He won 4 straight AAFC championships, but there were only between 7 and 9 teams in that league in those 4 seasons. He then went to 6 straight NFL championship games, with 13 teams in one season and 12 teams in the other 5 seasons.2. His team not only had one of the top passing games, but also consistently had one of the few best running games and defenses in the respective leagues over the 10 year period. It could be that his defense was the best overall throughout the 10 year period, but I didn't try to examine that to be sure.3. He played his entire career for HOF coach Paul Brown. From his Wiki page:- Brown is considered the "father of the modern offense," with many claiming that he ranks as one of if not the greatest of football coaches in history.- Brown put together the most extensive player recruitment network that had ever been seen in pro football at the time.- Brown ignored the gentlemen's agreement that barred African-American players from the league, adding future Pro Football Hall of Famers Marion Motley and Bill Willis.- He was the first to use intelligence tests to judge players, establish a game film library, instruct players in a classroom setting, use a radio transmitter to communicate with players on the field, and install face masks on helmets.- Brown's offense was the predecessor of the West Coast offense made famous by Bill Walsh, a protégé of Brown.4. He played with HOF C Frank Gatski, HOF T/K Lou Groza, and HOF E Dante Lavelli for his entire career. He had HOF G Bill Willis and HOF FB Marion Motley for his first 8 (of 10) seasons. He played his last 2 seasons (of 10) with HOF T Mike McCormack. He also had Mac Speedie for his first 7 seasons; Mac was All Pro in 6 of those 7 years, though he is not a HOFer.5. I have seen it posted in this forum that the best athletes in that era played offense. I have also seen it posted that defenses did not understand pursuit angles and did not run elaborate schemes as they came to do in later eras. I'm not sure how to verify these things.6. In Graham's last 10 seasons, Cleveland played in the title game 8 times without having to play any other playoff games. The other 2 times, Cleveland played one semifinal game. So Graham played in 10 title games but only 12 total playoff games.Now, I personally feel that Montana and Unitas are the top 2 QBs of all time, and I think that the next tier includes Elway, Baugh, Graham, Marino, and Favre as of today, in no particular order. I think Brady and Manning will end up belonging somewhere in that group, but I'm not sure how high yet.Anyway, I agree Graham is one of the best ever. However, there was no draft or salary cap and virtually no integration; he was surrounded by HOF talent; he faced lesser competition, both in terms of talent and number of teams; and he had a much easier road to title games. I think he has been overrated by some in this thread, and I think ultimately it will be justifiable to rank Brady higher than Graham.