most people that you battle on wi-fi they arent really cheating the game they just had like a lvl 100 pokemon that they traded with on there nds with a legend pokemon and if you have an action replay and if your trying to enter a legend pokemon and it will only work with ds battle mode and i only used it once when a friend was over but that doesnt really matter the reason why it wont work oh and you cant trade pokemon on the nds trade thing on the nds game because you used action replay to caught it the pokemon and that would be unfair to other people if people traded like a darkrai and im still trying to figure out how people are battling wi-fi connection with darkrai and the reason why you cant caught legends with the action replay with nds is because it would also be unfair to cut your way through the diamond and pearl like lets say if you caught 6 darkrias that wouldnt befair because you have to play the game fairly i know it stinks and some people can git away with cheating and thats why i think thats not a very popular game because people try to find away to fight people the easy way on PBR
from what i know well thats all i have to say just ask me a question about it and ill answer it thanks guys =I