Based on 4 career starts (his first 4 starts at QB in approx 4 years).
There was another guy a few years back that played QB exclusively all through college... never had a major injury... and ended up a top draft pick...
His 1st 4 career starts he went 0-4, had 3 TDs and 11 INTs.
Was that a big enough sample size to write that guy off and say that he didn’t have what it takes to be a starting caliber NFL QB?
His coaches thought “no” and let him continue to work on it... that player was Peyton Manning.
...and before you tell me about how bad that Colts team sucked, he had Marshall Faulk, Marvin Harrison, Marcus Pollard, and Jerome Pathon among his weapons.
Point is, it takes more than 4 starts at QB to tell what a guy can/can’t do.