I agree with the fast carbs.
But after endurance: why the fat/prot 
After my basketball (not 100% endurance, but still) i normally take fast carbs. I always thought it works the same way for the muscle.
Well, in a nutshell, scientists looked to the long distance runners from Africa I believe. And it wasn't all genetics. Some of it was the diet too.
Basically, starving.
The researchers found some stuff: after 10 weeks, a slight increased amount of cappilaries (sp?) and other things indicating that bodies adapting to low carbs. Especially when training.
The performance will be lower during the training, of course.
And you are to use traditional sports drinks during season.
It's different when it comes to lifting weights though.
But why not try skipping the sports drinks during pre-season basketball practice and running, only do it in-season and when lifting weights.
YIP
Zack