Having watched kids from CESA and the Academy play with and against each other for the better part of a decade, my observation is simple: They are so similar in almost every way as to render this discussion pointless.
The ongoing need to declare one side superior to the other is tiresome at best; ignorant at worst.
The truth is, BOTH systems provide motivated, talented kids with the training environment and competitive opportunities they need to transition to the "next" level.
Many from BOTH actually do.