That's because you can have a guy like Luka, for example, cover for a ton of flaws and drag a roster of 2nd rounders and UDFA's to a WCF. Can't do that in baseball. Mavs have been completely butchering the draft for like 2 decades, made fools out of themselves in free agency for years (DeAndre Jordan debacle), have a meddling owner just like the Angels, had their own sexual harassment scandal, etc. But no one knows about that, because they did well this year.
Source: am Mavs fan