I think just about any coach would do better in DEN than with NY (this year).
Just to name a few. All 5 of those talents have been, & are key players for DEN. They've all been with DEN for more than 1 year. Most for much longer.
MDA or any other coach could never say the same with this NY "team". How many players (key players) were with NY last year? The only key player that comes to mind is Douglas (who's only a 2nd year player). Before the trade? Gallo was MDA's only returning starter from last year. After the trade? 5 starters who weren't with NY or MDA last year; including a Rook in Fields.
How many rookies has DEN started this year? Zero. How many has NY started this year? Mozgov & Fields.
Thats just my take on these two teams. Thats how I view these two different situations.
If MDA weren't a good coach; he wouldn't rank as one of only 3 coaches, in NBA history, that led his team to a 60 win season after taking over for a 50+ loss team the previous season.