The Braves currently have 6 pitchers that could be considered Top 50-100 prospects (and none in the elite and more "sure thing" Top 10). Historically, about 40%-70% of those guys fail to produce even 3 WAR at the MLB level.
I am projecting 1 to have a significant career, 2 to have decent careers, and 3 more to have some sort of MLB career in the BP.
If anything, I am being optimistic about this group of pitchers.
I realize Braves homers think all these pitching prospects will pan out, but facts are facts, and the facts are that it's more likely each one of these guys produce nothing than produce significant careers.