I've yet to challenge him. don't actually plan to until I get around to beating the Elite Four second round
I suspect though like most of you, I'll probably feel it was easier then the metal gen counter part, however thats really should be expected. Think about it, most of us probably faced off against Red for the first time around 10 years ago. Through that time our Pokè Fu would of continuing to improve (providing your like me and been playing for those 10 damn years XD). What we know now, compared to back then should give us a great advantage, just in training our pokèmon alone