Alright, this is the last which-team-is-better-than which team I'm going to comment on: the Lakers had the league's best record, four HOF players, they had the Kobe-Shaq-Phil combo that won three rings (although one was actually given to them), they blown away all their opponents, they even beat the Spurs handily. They are, by all account, a better team than the Piston, which had no one, and I mean no one in the starting lineup with Final experience. While the Lakers had a bunch of guys who had been to the Final.
And to top it off, the Piston lost to the Spurs the next year, the same Spurs that got beaten badly by the Lakers. So no, the idea that the Piston was a better team than the Lakers is at best, revisionistic. The Pistons were underrated maybe. But better, no.