The way to compare is eyeballs to eyeballs and look at the matchup. One game does not make a trend, Detroit caught Phoenix on an off-night.
Detroit's offense is fine, but they're just not beating Phoenix's offense. Detroit has a good offense, Phoenix has a great offense.
And no offense, but I really don't think Detroit/Webber fans are seeing this one clearly.
I'm not offended at all. I just don't think you're looking at anything but Phoenix's reputation for being able to win games by scoring 120 a night. That's fine when you're playing the Lakers, but the Pistons have a reputation for being able to slow high-paced, offensive minded teams down and forcing them to play a half-court game.
And you're right, the trend wasn't set with just one game. That wouldn't be fair to the Suns at all. Looking at matchups is fine, but I don't think you can say "Hey, these are the matchups, and Phoenix comes out on top because no one can guard these players." You have to take into account the style of basketball Detroit plays, and why it's been so successful for them.
Their offense isn't so dangerous and potent that it's going to allow them to outscore Phoenix at will. But it is efficient enough that it will slow the Suns down keep them playing at a pace they haven't shown themselves to be comfortable with. And when the Suns have to slow down, the shooters - besides Nash - lose rythym, the team doesn't rebound as well as a unit, they start turning the ball over, and they fall apart defensively.
And, returning to matchups for a moment, the Suns can't matchup with Detroit's frontcourt. If they play Marion on Rasheed, he'd have no problem going to the block and using his 4 inch height advantage to shoot his turn-around jumper. We know what would happen if Marion were to guard Webber; even if they double-team him, he's as good as anyone at finding the open man, and you don't want anyone on the Pistons shooting open jumpers. And if Amare is guarding Rasheed, either he'll leave one of the best shooting big men in the game open on the perimeter, or he'll guard him on the perimeter and leave the paint open for Billups to work on Nash or for Webber to run the offense and find cutters at the rim.
And who's gonna guard Tayshaun?
I don't think the matchups favor Phoenix as much as you do. And even if they did, I don't think Phoenix can maximize any advantages they do have enough to keep the Pistons from playing effective defense for the better part of a series.