I would argue that it's just as hard, if not harder, to do what Miami did considering the the backgrounds of the players they brought in. When everybody is homegrown, they're acclimated to the environment. The system. The way of doing things. When you bring in aging stars with problems/egos/reputations (namely being selfish), it takes something special to not only correct those problems, but to get everyone on the same page and those stars to accept their roles (like a great coach). The guys Miami brought in were thought to be incapable of playing together effectively. Heck, it still looked that way heading into the playoffs.
Basically, Wade was the constant between all of the changes and growing pains, which included a mid-season coaching change. He kept the Heat's season alive. And he's the reason why we even made it to the Finals. It was great to see the supporting cast finally step for multiple games.
Also, Shaq was a FAR better player/athlete when he was winning with the Lakers. He was in his prime. He was still cat quick and unquestionably dominant. Still leading the league in scoring. Lots of rebounds, assists, blocks. In his first Finals with the Lakers, he topped 40 points three times. His stat lines in the Finals were generally even more impressive than Wade's, considering he hovered above or below 20 rebounds.
This Finals, at age 34, Shaq averaged 14 points and 10 rebounds. Not exactly the Shaq of old.
Shaq is 34. Payton is 37. Mourning is 36. This team is pretty old. They were supposed to be run out of the gym by the younger, faster Mavericks. And many times, they were. Again, the glue in those tough spots was generally Dwyane Wade.
Yes, it's similar to what the Lakers and Phil Jackson did. But it's also similar to what Jackson did with Jordan and the Bulls.
Also, those team's second tier stars aren't all homegrown. Dallas' Jason Terry and Jerry Stackhouse were already well-established vets elsewhere. Erick Dampier played many years at Golden State. Adrian Griffin and Keith Van Horn both played many years in other cities. Even Diop played four years in Cleveland. Darrell Armstong is best known for his years in Orlando. So basically, they can claim Josh Howard, Devin Harris and Marquis Daniels. Very impressive. But it's only one more than Udonis Haslem and Alonzo Mourning.
You could also argue that another of Miami's top homegrown, 2nd tier talents was instrumental in the Heat's win. That would be Caron Butler, 3rd in 2002 Rookie of the Year, who was an ingredient in the deal that allowed us to land Shaq. :)