In my experience, the coaching rating is backwards from my understanding of it as explained in the thread and others.  My game yesterday:
Team ratings for  King Drive Ballers (me)
 
Offensive Strategy: 	Base Offense
Defensive Strategy: 	Man to Man
Coaching Rating: 	inept (medium)
Team ratings for BK Rajecke Teplice (bot opponent)
 
Offensive Strategy: 	Base Offense
Defensive Strategy: 	Man to Man
Coaching Rating: 	prolific (low)
I won this game on the road by 35, and had much stronger players.  Looking closer at the tactics of this game, there doesn't appear to be any major mistakes either I or the bot coach made.  My guess to this game (and coach rating), is when you have better players its harder to get a higher coach rating.  
                                
                                
                                
                                
                                
                                
                                    "Well, no ones gonna top that." -  http://tinyurl.com/noigttt