I just don't understand the focus on depth in this matchup. Denver has shown about as much depth as us in these playoffs and that is with us having one of our top bench players out in Payne. They may beat us in the depth department, but it won't be anything like the Clippers depth for instance.
The altitude plays a big role. Much harder to play guys 40+ minutes in Denver than here in Phoenix or LA. Denver is accustomed to it, Suns aren't.
Plus they have a stronger starting 5 and more legit players than we do. No one other than Booker and KD would start if you added them to the Nuggets roster. CP3 and Ayton wouldn't start ahead of Murray or Jokic, but they'd be solid bench players there however Torrey Craig would be the 9th best player on their team, at most. No one else on the Suns would be in the rotation except maybe Payne, if he were healthy, but he'd also be their 9th or 10th man. That's why depth is an issue.