Amen. When I play one of the Tekken games on a real arcade unit, even Tekken 1 for that matter, I start shaking with adrenalin. Playing the exact same games in MAME or the conversions which came with Tekken 5 PS2, I don't have the same feeling. They might play exactly the same, but the feeling is lost, and I don't get to sneak a Coke out of the fridge when the Domino's guy at the counter goes out the back (there used to be a Tekken 2 in a local pizza shop).
Tekken Tag Tournament on the PS2 features enhanced graphics, a bowling mini-game and a playable boss character not available on the arcade's select screen, yet the game still doesn't have the arcade feel of the original, despite the arcade version most commonly being left in non-interlaced 512x240 mode, and the fact that the arcade board was System 12 (not 246), which like the PlayStation 1 it was derived from, lacks graphics filtering/anti-aliasing and anything like that. It's another reason why graphics doesn't mean crap when it comes to gameplay, yet gameplay doesn't mean crap without the feeling of being there. No arcade ambience CDs, even with a real arcade cabinet in the home, can ever replace being there in the middle of the arcade itself.
Anyway, the moral is, the arcade experience will always beat the home experience hands down.