Hard to argue against given his size, arm talent, speed and elusivness.
To boot, he seems to have the work ethic and overall drive to be great.
Vick is on record stating that in his stint with the Falcons he relied almost solely on his natural ability. He didn't study the playbook or put in the work to improve as a QB.
A waste, but also damn impressive seeing what he was able to do on the field.