P1 Gold (Me using Pokemon SoulSilver - Shadman) vs. P2 Gold (friend using Pokemon HeartGold - Mrperson0). This is a fun battle we did, nothing competitive. So no saying "you guys suck" or anything like that.
No, this game doesn't even know about Platinum other than converting them to normal Lucas and Dawn. And since the actual games used are HeartGold and SoulSilver, it's Gold vs. Gold. Lucas is just a representation since this game didn't know about future games.
And? Ethan and Lara aren't in this game... I mean, why would they be? HG and SS came out in 2011, and this game in 2008. D/P/Pl were around the same time as PBR, so of course they'd be in it. The only reason HG and SS are compatible with this game is because this game can't tell the difference between these games and D/P/Pl. I think it considers them to be Platinum, but that I'm not so sure about. Point is, that's Lucas.