I live in Phoenix and I can tell you to forget about Shaq's tenure here. The Suns will never win a championship with Steve Nash, but he has all the power on the team. Steve Kerr tried to change the character of the team to one that could actually win big in the playoffs and failed. Phoenix players and fans love the 6 seconds or less style and Kerr and Shaq were never going to be successful there even if Shaq was in 2000 form.
If Cleveland was in fact more proficient on offense sans Shaq, then it would have to be due to the fact that LeBron simply handled the ball more. Because there is not a single other player on that team that could create a shot. I believe Miami's chemistry will struggle for that reason. Wade and LeBron both need to handle the ball ALOT.
Shaq can be accomodated into the system if the other players buy in. That was lacking in Phx and Cle. I think we're doing exactly what we need to do. Getting huge and deep in the frontcourt is the only way we're going to beat Orlando, Miami, and LA..