It's great to see new managers with great tactical nous coming up, you'd do well in the MBBA one day.
CS, it might be stamina or the game engine. Tactics work really well the first quarter and maybe the 2nd, but as the game goes on your AI coach 'adjusts' your gameplay according to what your opponent has to offer. This becomes most apparently during the last quarter when you might not even be playing according to the tactics you set, just what is most effective.
For example, if you play Look Inside and your opponent has crazy ID but lousy OD, you will notice you won't score much in the first quarter. But by the time the last quarter comes around, you will find your team shooting more jumpers and 3 pointers rather than inside shots because your players are finding hard to score inside.
OMG....RedDevilz beat boombastic.