Well firstly, we have no one to stop Melo. He's gonna go crazy. Grant Hill may be smart but his brain isn't gonna stop Melo's crazy first step. Look for JR Smith to get a lot of good looks from deep as well - for some reason, Nash/Barbosa/Barnes now think it's a good idea to play the role of help defense, all the time, usually with no benefit at all - while leaving their man wide open.
I wouldn't take Denver's past performance against the Suns as a reference - this current Nuggets team has been playing damn good defense. Chauncey is going to drive Nash nuts, especially if he goes and posts him up.
Shaq against Nene should be a wash, but you never know. Nene's having a great year.
Despite what I've said, I still hope the Suns pull this one out. We've switched back to a free flowing offensive system, added a key player in JRich, and are still building chemistry - we need some big wins right now.
Good luck for the game