My guess is many had never heard of it before this poll.
That's my thinking as well. I thought its combo of attributes would make it a contender for people who like the MA.
I wonder what it would have been like if the ingame poll window had looked something in the general direction of this:
X Me410: Engines: 2 Top speed: 388mph Armament:2x7.92, 2x20mm,2x13mm, up to 1000kg bombs, Maneuverability: Slightly better than Me110
X Ki43: Engines: 1 Top speed: 329mph Armament 2x12.7mm Maneuverability: Godlike.
X J2M3: Engines: 1 Top speed: 382mph Armament: 4x20mm Maneuverability: Somewhat like Ki-84
etc.
That way people wouldn't be voting completely blind on the stuff they've never heard of, but they don't have to, y'know... read and go to wikipedia to find out about them.
I wonder if it would've changed the outcome. Wish this had occurred to me when they put up the first forum poll.
Wiley.