it's two entirely different things. To me your asking the same thing as:
What if the Rams met SD in the SB and instead of football they played Ping Pong? Well, actually that MAY be worth watching.
But no where near with the same degree of interest..and I wouldn't consider it a SB victory.
There is point when 'change' could so radically change the game... that the 'game' is no longer the same game at all... and for me 'flag' football definitely crosses that threshold. Obviously it's not that way for you, and probably many others.... but my guess is that the majority would agree with me.