I recently took a look at Namath's career numbers. Wow, that guy is built around nothing but that "guarantee."
He was a great quarterback. Namath was a true gunslinger who had three seasons of high number of attempts with 8.2 YPPA or higher. Marino had one, 1984.
INTs were high but that was true in that era.
One of the understated accomplishments of the '72 Dolphins was defeating Namath, 28-24, in his last great season. In fact, that was his peak year of 8.7 YPPA. Miami came from behind in the second half and then held Namath in a desperate 4th quarter. Thrilling atmosphere at that game.
Namath was a phenomenal athlete in college, better than Elway. But he hurt his knees in college then had many surgeries in the pros, robbing him of full strength, or even close to it, for the majority of his career. Once it ticked to 1970 he was seldom healthy but the pre-merger Namath was as dangerous as anyone I've seen.
Look at it this way, high YPPA combined with 50% completion percentage demonstrates how lethal he was down the field when he connected. For reference purposes, Marino's all time high was 14 yards per completion, again in 1984. Namath AVERAGED 14.7 for his career (to Marino's 12.4), including all the injury plagued seasons and wobbling through a final year with the Rams. Namath had 9 years of 14 yards per completion or better, with a high of 17.4 in 1972.
It was a different game but marvelous to behold. I hate to see it diminished or misunderstood. Teams ran the ball often but took true risky shots down the field. In this era the so-called bold plays are 12 yard curls.