I've seen many people come up with numbers and ideas about how it can be done, but talking to transport people and the police about what it's like on the ground, I can't see anyone's figures stacking up.
Can you go through your figures again about how it can be done - without presuming that everyone else is fit / healthy / without small children, and without presuming that the majority of fans will be coming from BN1 / BN2 / BN3 (only about 36% do)?
The principle problem - though by no means the only problem - as I see it, is the buses taking up the strain of what the trains would normally provide - that's around 11,000 people in the first 35 minutes after the end of the game, or 138 full-up bus journeys. A split from Brighton Station and Lewes Station as a replacement service can be achieved, but where do you house 138 buses after the game?
This is assuming that the bus drivers are prepared to give up their Boxing Day, even with the temptation of a bumper payday, and that the club is prepared to fork out a six-figure sum for the bus hire.
Looking at it another way. The club are actively looking to use the venue for concerts. Given Southern's stock response to concerts in the Falmer area is to close Falmer station how do they anticipate sell-out crowds leaving the stadium with no trains after a gig? What transport strategy will they employ for sell-out music shows?
It's pretty clear the club would like to move this game as it will be easier and cheaper to play under normal circumstances, so I would take the views of police and transport people connected to the club with a pinch of salt..they will have an agenda.