Not only does Steven's have no bite, but he has no bark either. Personality wise, he has NO Popovich in him at all.
Doc Rivers may not have been a basketball genius but he knew how to stimulate personalities. When Doc was p---ed at you, or if you disappointed him, you felt it...you knew it.
Coaching in the NBA and coaching in college is much different. In college, you're teaching the players... they need you to take the next step. In the NBA it's much more about managing the personalities. You have to appeal to their pride. The season is very long, at times you have to kick some ass. If you yourself exhibit no passion, your team won't either.
This team plays well against the best in the league because they stimulate themselves, but when they play a team they should walk over it's the coach's job to light a fire under them or point a finger at a few players that didn't give 100% effort. Great coach's find whipping boys who can take the finger pointing and then ignite the team.