Can't comment on the LoCo guy, perhaps he's got a good act in the sim, but:
Given that a RAF Eurofighter pilot failed...
Hate to say it but the ability to fly a rather challenging single seat aircraft may not be a particularly good indicator as to how you're going to perform in a crew environment.
One of the most "difficult"
student QFI's I ever had the pleasure to instruct came from a single seat background - absolutely ace pilot, on the numbers and all that but boy did he know it and he had absolutely no empathy or patience with a struggling (simulated) "Bloggs"
...
There's a reason why there's a aviation drinking song with the line:
"You can tell a fighter pilot but you can't tell him much".
That said a lot of ex-FJ pilots have successfully made it into BA over the years, but I'm guessing they didn't bring their TopGun act to the assessment sim.