There are definitely some issues with the 1.5 development model where it's curving players down relative to CA, it's something we are looking into and will ask Riz about once he is back on EHM work. Either that or we just need to change our approach to attribute spread relative to CA.
@Beef Cake has been playing around with some thing and may have a better explanation for what's happening.
If you could provide a save game and some players to look at that would be appreciated. Also I would ask opening a topic on the Bugs forum for tracking.
Eastside Hockey Manager Bugs Forum, even if its determined not to be a bug its a good spot to report any kind of concern or issue.