Nah, that's just a myth put about by bitter City fans.
I would say that it's around 50:50, but the respective attitudes couldn't be further apart.
City fans hate anything to do with United with a vengenance. They would be delighted for Old Trafford to burn to the ground and for the club to go bust.
United fans meanwhile, pat City fans on the head in a friendly and caring manner and would be perfectly happy for City to finish runners up every season.
:lol:
Incidentally, the fan spread is certainly not 50:50 in schools. According to Dan jr everyone is a United fan except for the twins, George and Oliver, whose dad makes them support City.
Poor sods...
...'Dad, why can't we support United like everyone else?'
:wink:
Cheers
Brad