I made some tests today, because my wife really needed a new Keeper. Luckily, at the morning, there was a good (not a superior) Nordgen-Keeper on the list. At old training, he got ~105 points per pratice match. He needed 36 green packs for 25 points (ratio 1,5). After that, I switched to new training, made 1 GK-Drill, 5 Fast Counter. It tooks only 19 green packs for 25 points. All drills were world class.

I also wanted to push him to 110%, he needed at old version 50 points. With the ratio of 1,5, he would need 75 green pack or more (because the higher he is the lower the points he gets).
I trained him only in new version, only with worldclass-drills. At the first slot, it was always GK-Training, others were mixed up. It only tooks 59 green packs, to push him to 110%.
So, I think, new training with worldclass-drills work much better, than old training. Next season, I will test it on my own attackers.
Maybe, that's the reason, why my team made the last season around 30%.

Two screenshot from SA-Training:
Pros and cons in power training-img_2077.jpg
Pros and cons in power training-img_2076.jpg