The Suns are not a better team without Amare. Next youll be saying theyre a better team without Nash too because they beat LA without him.
The other two you definately have a case for though. DET is much more in sync without AI holding and ISOing, and HOU goes to Yao a ton more and guys are getting open looks off that vs Tmac being there and holdign onto the ball too much causing way too many shots with the shot clock going down.
In saying that though, both DET and HOU need one more big piece to legitimately contend next year, theyre both still a ways away IMO.