Let's take a look at first year stats of some other QBs...

[RedEyE]

McNabb: 12 G / 216 att / 106 comp / 948yds / 8tds / 7 ints / 60.1%
1999

Bledsoe: 13 G / 429att / 214 comp / 2494 yds / 15 tds / 15 ints / 65%
1993

Montana: 16 G / 273 att/ 176 comp / 1795 yds / 15 tds / 9 ints / 87.1%
1980

Marino: 11 G / 296 att / 173 comp / 2210 yds / 20 tds / 6 ints / 96%
1983

Vick: 8 G / 113 att / 50 comp / 785 yds / 2 tds / 3 ints / 62.7%
2001

Favre: 15G / 471 att / 302 comp / 3227 yds / 18 tds / 13 ints / 85.3 %
1992

Elway: 11 G / 259 att / 123 comp / 1663 yds / 7 tds / 14 ints / 54.9%
1983

Kelly: 16 G / 480 att / 288 comp / 3593 yds / 22 tds / 17 ints / 83.3%
1986