Team was in the neighborhood of as good as the 90s Rockets, probably those 00s KG Celtics and definitely beats the latter half no-Shaq Lakers (remember, they beat the #### out of the defending champ fully healthy Kobe Lakers in 2011). I think they certainly stack up well against the LeBron Heat (they did beat them the first time) and mid 10s Spurs. Given how close they were in 06 with a worse team, I'd say they're likely better than the 06 Heat too.
The number of times Dirk with worse teams were in the WCF where a guy like Tyson alone would have put them up with and maybe past the Spurs in the 00s is non-zero also IMO.
Shawn Marion's a pretty surefire HOFer (bball ref has him at 75%)
I probably overstated with 4. That's 3, plus small chance for Tyson (12%), and I was surprised at how Jason Terry seems not close. He beats the Mitch Richmond line I'd have thought (ha!). Peja on that team as well, though no longer prime for sure (year 11 of his career?)