Take a look at the stat lines below and draw your own conclusions. Mine: AS had a first-time playoff performance on par with any of the greats of the 49ers or the current era QB's. Here are the stats:
Montana - 1981 Win. Pass 20-31-304, 2 TD, 1 Int. Rush 3 for -9 yards, 0 TD. 4th Quarter - not a comeback situation.
Young - 1992 Win. Pass 20-30-227, 2 TD, 1 Int. Rush 8 for 73 yards, 0 TD. 4th Quarter - not a comeback situation.
Garcia - 2001 Loss. Pass 22-32-233, 1 TD, 1 Int. Rush 2 for 3 yards, 0 TD. 4th Quarter - failed comeback.
Tom Brady - 2001 Win. Pass 32-52-312, 0 TD, 1 Int. Rush 5 for 16 yards, 0 TD. 4th Quarter - comeback to tie, OT win.
Ben Rothlis - 2004 Win. Pass 17-30-181, 1 TD, 2 Int. Rush 4 for 30 yards, 0TD. 4th Quarter -- comeback to tie, OT win.
Peyton M. - 1999 Loss. Pass 19-42-227, 0 TD, 0 Int. Rush 2 for 22 yards, 1 TD. 4th Quarter - failed comeback.
Alex Smith - 2012 Win. Pass 22-42-299, 3 TD, 0 Int. Rush 1 for 28 yards, 1 TD. 4th Quarter - 2 comebacks in last 4 mins.

I'm not really into numbers. Rather watch the game and judge for myself but that's impressive for a first timer. Thanks