the important thing is to provide an engaging image to a large area. that means size, viewing angle, and brightness.
a projector is awesome, if you have one bright enough to be seen in ambient lighting, cause nobody wants to watch the superbowl in complete darkness. a plasma/lcd is great if you can get it big enough to suit your room and number of guests. oled seems like a total waste, as it's currently not big enough, and the pq 'advantage' will be totally lost on everybody anyway.
and I'd say the 'average' person is more interested in what you'll be serving than what they are watching the game on.
all that being said, i'll be watching movies on my projector next sunday