Let me break down Vince Young's season..
Vs. NYJ:
3 of 4 for 27 yards, 1 INT
Not enough play to judge. But the one pick wasn't smooth.
Vs. SD
7 of 19 for 106 yards, 1 TD
Low completion percentage, low yardage.
Vs. DAL
14 of 29 for 155 yards, 1TD 2 INTs
Not completely terrible, but the 2 INTs killed it.
Vs. IND
10 of 21 for 63 yards, 1 INT
Terrible.
Vs. WAS
13 of 25 for 161 yards, 1 TD
Not too bad, not "good" QB numbers.
Vs. HOU
7 of 15 for 87 yards, 1 TD
Fairly weak.
Vs. JAX
15 of 36 for 163 yards, 1 TD 3 INTs
WEAK.
Vs. BAL
13 of 25 for 211 yards, 1 INT
Not too bad, except for that pick.
Vs. PHI
8 of 22 for 101 yards, 1 TD
Another weak performance.
Vs. NYG
24 of 35 for 249 yards, 2 TDs
Easily his best game.
Vs. IND
15 of 25 for 163 yards, 2 TDs 2 INTs
More INTs added to an otherwise mediocre performance.
Vs. HOU
19 of 29 for 218, 1 INT
Decent yardage, decent completion percentage, but there's another INT with no TDs.
Vs. JAX
8 of 15 for 85 yards
Weak.
All together he was 184 of 357 for 2199 yards, 12 TDs 13 INTs
He also ran 83 times for 552 yards and 7 TDs
Point being he did not single-handedly win all 7 of those games with him as a QB stricly because he was the QB. He is not GOOD just yet. He will be IMO, but he is not yet. He's decent with his legs, but as a QB he is not on the level you two think he is.