23 touchdowns a year in college now qualifies as "gaudy" I think Jackson has an incredibly strong arm and out of this world ability with his feet, but you need more than a strong arm to be considered a "terrific passer."
Everyone is entitled to their opinion on him, but my opinion is he can't read an entire field and is wildly inaccurate at times. Long term I think he ends up being a guy that flashes early, makes incredible plays, and wins you 50% of your games.