You should have just read the other topics here saying how bad it is
1) It uses graphics which aren't much better than the N64 games.
They're a lot better than the N64 games. The N64 version of Arcanine looked like two blocks with legs.
2) Has no mini games
This is a good thing. The one and only thing that was good about the mini games in Pokémon Stadium 2 was using your own Pokémon to make them like you more. But now we have the Soothe Bell, massages in Veilstone City, the spa treatment in the Resort Area's Ribbon Syndicate, and far more complex Berries, doing this in Pokémon Battle Revolution is redundant.
3) Is way too easy to bet
So? Look at the Mystery Gift area in the Shop menu. It may be easy to beat, but with all the Poké Coupons you're getting, one-per-game items become "hey let's give you 10 more for beating this game" items.
4) It's almost impossible to find an online match where your rival doesn't have hacked pokemon.
Actually, Pokémon Battle Revolution is sensitive to truly hacked Pokémon. Sure, Shaymin and Arceus aren't yet legal, but this is the one and only case in which Pokémon Battle Revolution doesn't see the hack, assuming that only the item (Oak's Letter for Shaymin and the Azure Flute for Arceus) was hacked for, and the Pokémon was captured legitimately. Otherwise, it'll show as a Bad Egg.
5) The pal version doesn't have the event pokemon(only relevant if you live in the UK/Europe).
Who cares about the UK and Europe anyway?
6) Way too expensive considering it's just an expansion pack for D/P
I'll give you this one, but since I got mine for US$20... :P
I could go on but i think those are the main points.