And how is that different from him going anywhere else?
Well, I guess the main difference is he could be signed and traded to a team with an All-Star or 2 or potential All-Star or 2 already on a team that is over the cap, with a solid core and so doesn't have to build from scratch with vet min type players.
Is a team in 2015 of Melo, Rondo and LMA with 10 vet min guys better than say a 2014 team with Melo, Rose, Noah, Dunleavy, Gibson, Butler, Snell and Teague and still having the ability to use an MLE?
And let's not get into the exact details of how that would or could happen, its just a quick example. The point is there is an awful lot of assumptions of variables to occur to make it very likely, for what the author wrote, to happen. And there is a very smart agent involved that will lead Melo into whatever direction he wants, whether that be top dollar(in NY but not with the best surrounding players, at least not without a lot of trades happening) or a ring(tons of ways to do that and the best probably not being the one the author wrote up) or something in between.
And to get back on point, the author is assuming keeping Melo at a max extension($25+ million per year), signing Rondo and Aldridge and retaining Shumpert and Chandler. I just don't think he clearly understands what he is proposing is nearly impossible without renouncing Shumpert and Chandler, getting Rondo and LMA at severely reduced rates then resigning Shumpert and Chandler to basically vet min contracts. The max extension for Chandler makes it just an extremely unlikely scenario and if that is what NY is selling Melo on, Melo's agent is going to see through that and advise him accordingly