ESPN did a debate over the greatest QB of all-time and their poll had 50% Montana, 50% Brady. Brady just took over on most playoff wins -- which is awesome -- but a few things are not mentioned when the two are discussed side-by-side:
1) Montana won his first two Super Bowls with Dwight Clark as his greatest receiver. Clark had only one 1,000 yard receiving season in his entire career, yet all we hear about is how Brady won with different receivers during the Free Agency era
2) Montana did it before the NFL changed the rules (and not just the helmet-to-helmet stuff and the roughing the passer rules). In 1994, a change in the rulebook made it so that defenders couldn't impede receivers past 5 yards from the line of scrimmage. Even with that being the case, Montana's postseason numbers are more impressive than Brady's.
Still, I'm not really trying to prove a point, because I do think that it really is pretty sick that Brady will probably get to 6 Super Bowls or more once his career is all said and done. I'm just glad people have stopped all the silliness about Payton Manning. When faced with stout, playoff defenses, the dude just makes too many mistakes to be in the conversation.
Posteason Passing Stats:
Montana - 3x Super Bowl MVP
[4 Superbowl Appearances, 4W- 0L; 11TDs 0INTs in the Super Bowl]
Brady - 2x Super MVP
[3W-2L; 9TDs 2 INTs in the Super Bowl]