His 56.3 career completion rate is a cause for concern for some in the National Football League, given that quarterbacks often have a hard time substantially improving that statistic when they face more man-to-man coverage in the National Football League with smaller throwing windows.
Each class of collegiate quarterbacks head to the combine with that very topic in mind.
Asked inside the downtown convention center Friday if he is this draft's best quarterback, Oklahoma's Baker Mayfield kicked things off with "absolutely, and if you don't have that mindset, then something's wrong". There is far less consensus on Allen and Mayfield.
But the truth is that his father's decidedly non-Hollywood approach has created the blueprint Allen has followed during the hectic pre-draft process.
Darnold is vanilla, Rosen is chocolate and Mayfield is birthday cake ice cream topped with exploding candles.
In contrast, those seven experts (Daniel Jeremiah, Bucky Brooks, Charley Casserly, Peter Schrager, Charles Davis, Lance Zierlein and Chad Reuter) are all over the board on Allen and Mayfield.
The five quarterbacks in consideration for the first round in next month's draft will get a chance to separate from one another in on-field drills Saturday at Lucas Oil Stadium. He gave that honor to Allen.
"While it is important to keep a T-shirts-and-shorts workout in perspective, this stellar outing from Allen will prompt some scouts to view the Wyoming product as the No. 1 quarterback prospect in the class, based on his physical dimensions and his limitless potential". Both came to Indy fully expecting to dominate.
Given his already elevated status and those combine results, Allen might have just reinserted himself into top pick discussions.
"I think I'm the best quarterback here", Rosen said.
Google "Does Josh Rosen love football?" and you'll get dozens of stories suggesting he does not.
Clearly a much different approach from Mayfield. "Given all the information that I had, I thought that was the best decision".
The Heisman Trophy victor wasted no time in embracing the opportunity to play for the Browns, who own the first and fourth overall picks.
"To me, Sam Darnold is the top quarterback this year", said Dane Brugler of NFLDraftScout.com "The intangibles and what he's done at such a young age at 20 years old really checks a lot of the boxes you look for in a young player". The energy I bring, the passion I bring, it's infectious.
The Browns clearly need an upgrade at the quarterback position. Coaches and scouts know if you don't complete a pass here it doesn't matter, you don't know the wideouts.
Are you meeting with Team A?
"Honestly, I feel like I let myself down and my teammates down during this last season when I turned the ball over so much". I've always been brutally honest and some people don't like that because it's rare now days. He will meet with the teams that might take him - and try to set them straight. "And it just bothers me a little bit that he ought to override his trainer or override his agent or override his parents - whoever's telling him not to throw - he should say 'I'm a competitor, and I want to throw'".