No there isn't. The PDF tells you "Brighton and Hove buses except a couple of specific B&H routes... here's a link to their website that contains lots of bus timetables".
Your problem is, according this post, with the Brighton and Hove Buses website not being clearer that when they say, for...
The pdf tells you the buses you can use, that list of available buses doesn't become invalid because the link (to an external site that serves non-football customers, too) they give you to look up times of those valid buses also contains times of other buses you can't use.
If the map was all that there was to it, I would understand thinking it meant any bus that served that area would be included. But the text supplied with the map (before the map in the pdf on the official website) specifies the buses that are included (Brighton & Hove buses with a couple of...
The travel guide on the official website: http://www.seagulls.co.uk/documents/travel-guide-aug15-final-1229-2594348.pdf
Free Travel Services
For all Championship games at the Amex Brighton & Hove Albion FC offer home and away fans free travel on buses and trains within the Free Travel Zone...