Yes thanks so much. Makes me feel better about upgrading
I would be careful. This is just the opinion of one person... Until there is hard data nothing can be said 100%.
I rather suspect that the difference is closer to 5%, if not less, for a level 5-6 trainer. Again, this goes back to my theory of one extra week of training per season in a single position training program. If the difference was 15%, that is about 2 weeks of extra training per season.
Run of the Mill Canadian Manager