Okay. Go look at successful lefties in other sports. They are rare. Baseball has the most by a huge margin. Only 10% of the entire population is left handed. Extrapolate that to the minuscule percentage of the population that actually plays professional sports and it’s pretty amazing we can name 10 starting NFL QBs who are left handed. The sole reason there aren’t many successful left handed QBs is because there aren’t many left handed atheletes and the ones that are mainly get pushed to play baseball.
Did some research on the matter. NFL history has only 22 left handed QBs (technically Pat White was WR). I’d say 5 would be considered “good”. That’s a pretty good success rate but overall well less than 10% of NFL QBs are (lefties compared to general population 10%). Probably more like .05% or even less. (Maybe 600+ QBs historically? Couldn’t find an exact #).
Not disagreeing with your take on other sports taking some, but I think there’s enough to say the stereotype does fit (in addition to other reasons).
The 5 “good” lefties:
Stabler, esiason, Young, brunell, Vick.
Some bubble choices (0 pro bowls among them)
Zorn, Bobby Douglass, Scott Mitchell(?)
The rest:
Frankie Albert (46-52), terry baker (63-65), David Humm (75-84), Paul McDonald, Todd Marinovich, Doug Nussemier, Cade McNown, Chris Simms, Jared lorenzen, Tyler Palko, Matt leinert, Tim Tebow, kellen moore, pat white(?).
Another stat I noticed looking these guys up is the rushing ability. Large % are decent runners which makes me wonder about the correlation regarding the “backwards” offense mentioned by someone else.
Vick, Douglass, Young, brunell are all time rushing QB leaders.
Albert, Baker (more of a RB than QB in his day anyway), Humm, mcnown, Tebow all had a decent rushing season the year (or more) that they were actually playing.
Really never played:
Nussmeier, lorenzen, palko
So, Tua is not by definition going to be a bad QB because he’s a lefty, but he’s already defied odds just by being a lefty and the large majority of NFL QB history says he’s going to struggle.
I’d argue if he (or any other QB) went to a team that had a lefty, I bet their chances to succeed go up because the entire offense has already made adjustments.