Taking a look at Kevin Kolb's Career Stats:
GP: 34, Comp: 449, Att: 755, Comp%: 59.5 Avg: 6.90 TD: 28, Int: 25
Now 34 games is no longer a small sampling of games so we can start to talk about his career and what we should do regarding the Quarterback situation for this year and to follow.
Consider that the great Kurt Warner has Kolb beat in practicably every category but the biggest one was his comp%. He was a career 65.5% passer and in his last two years with the cardinals he had Completion percentage of 67 and 66 percent.
You ask why do i bring this up. Well Lets look at the last 5 super bowl winning QB's
I am going to throw out Eli Manning because his first two years in the league his passer ratting was a really bad 50% and this was in the same 35 games that Kevin Kolb has now played. (of course this was in 2 years not 5)
We can now look at this and say that an accurate passer wins Superbowl's in this new passing era. Which is a good argument since Turnovers play such a huge role and putting the ball only where your receiver can catch it is important.
What this means for the Arizona Cardinals is that he either needs to improve as a passer with accuracy or we need to get someone in here who can put the ball where he needs to. I like Alex Smith, and honestly thought that when SF brought him back two years ago he would be craptastic, so now i am eating my words because his completion % has been around 65% and that is with a higher average of yards than Kolb has so he is not Matt "dumping it off" Leinhert.
This being said Kolb (if we can keep him upright, and not give him happy feet every single snap of the ball) can win us some games this year, I believe he proved that early last year despite all odds. But I dont think he will ever be able to bring us to a Super Bowl and win it. I hope i am eating my words.... but it seems unlikely....