Isn't the argument more about how championship teams are constructed and that LeBron's team is constructed in a fundamentally different way than Chicago's? The idea of the "Big Three" in this era started with the Boston Celtics getting Garnett and Allen to team with Pierce. Before that though (in this immediate era), the Lakers and the Mavericks in the 00's had long attempted to acquire boatloads of talent to win titles as opposed to a bit more 'organically' grown teams like the Pistons and the Spurs. What does that matter?
What I find interesting is the narrative specific to Chris Bosh being part of the Big Three, being the NBA's premier PF in 2009 (the year before his free agency), and generally being a great player. Bosh has never really been a premier PF (at least in the typical PF definition) but he played really well in Toronto, similar to Shawn Marion playing great in Phoenix for so many years. Quietly accumulate stats on inferior teams, get attention, and prior to a trade or free agent year you'll be lauded by the media. Bosh is a really good player, great in certain aspects, but the things he is great at are not really consistent with a typical PF. I don't think Bosh has been a very valuable addition to the Heat's Big Three like Garnett was to the Celtics or like Duncan is to the Spurs. He's a top 10 (former top 5) NBA PF that does some good/great things, but not in the paint. I think that ESPN and other major NBA media created the narrative that Bosh is greater than he really is to make the idea of Wade/LeBron/Bosh signing together much more 'sexy'.
I clarify my thoughts on Bosh to just bring context to "The Decision" and how if we look at the talent levels between the 90's Bulls and the Heat (which is retarded but people want to make MJ to LeBron comparisons) we see similar levels of talent on both sides. The 91-93 Bulls have Horace Grant (a top-10 NBA PF and very talented), BJ Armstrong (a world-class 3-pt shooter in his era), Bill Worthington (a stereotypical NBA center), John Paxson (a good/great outside shooter), and a young Scott Williams (a tremendous off the bench F/C) to go with Jordan and Pippin. The 95-97 Bulls have Dennis Rodman (a world-class PF that worked great in the paint), Luc Longley (stereotypical NBA center), Ron Harper (great all-around player), Toni Kukoc (a great all-around player and scorer), Steve Kerr (great outside shooter) and a young Jason Caffey (solid bench PF).
I think these compare similarly to the talent levels of the recent Miami Heat in team composition. Ray Allen at this point in his career is a world-class jump shooter that plays the role of Kerr/Armstrong/Paxson, while Battier is somewhat of a tweener like Kukoc (admittedly I think Kukoc was much better at that point for the Bulls than Battier is for this Miami Heat team). The Bulls also had Phil Jackson... the greatest NBA coach in league history. But anyone that looks at the Bulls of the 90's and sees Jordan, maybe Pippin and that's it is fooling themselves and only looking back at the fondness of Jordan memories. Those teams had a ton of talent and were very well composed.
I think the differences I see are that Chris Bosh's talents do not compare to the player types of Horace Grant and Dennis Rodman (dominant inside presence) to facilitate increased 'chemistry' for LeBron and Wade like Grant/Rodman did for Pippin and Jordan. This is the fault of the Heat's management decision to sign the Big Three with little regards to on the floor lineups. They have won so far, but I don't anticipate them to maintain success with the aging Wade and the 'soft' Bosh. They will have to find a different PF/C composition to continue to win.
Lastly, in terms of player-type comparisons (not to say attitudes although I think MJ and Magic themselves could be quite douchey in their playing days) I liken Kobe to MJ and LeBron to Magic. I never get the LeBron to MJ comparisons...