Denver obviously got players in their deal who could step in and play from Day 1 (as opposed to the Jazz who got players who "apparently" still aren't ready to play on Day 750+) but the big thing is they have an identity along with a coach who understands how to accentuate strengths and minimize weaknesses. Denver knows they play in thin air, they know they have tremendous run & jump athletes and their mindset since drafting Carmelo has been to run, run, run. They're not trying to turn Faried into a back-to-the-basket player. They haven't turned Ty Lawson into walk-the-ball up PG. They know JaVale McGee will make alot of dumb mistakes and they're not playing him 30mpg. They don't utilize a poor 3pt-shooter like Andre Miller as a floor-spacer. If Koufos is effective he'll get his minutes, if he's not he'll disappear for good midway through the 1st&3rd quarters. Ty Lawson is playing extremely well but there's not a top-12 player on their roster. They have a guy in Lawson who can be the engine for what they want to to and then they try to come at you with waves of players who can all play at their tempo.
Denver has a style of ball they want to play, and they have a coach and front office who are effective in conveying that identity onto the basketball court.