"Numerous" out of how many hundreds? It is rare, period. The Rays for instance not only started Brendan McKay (the best college player in his draft) in their equivalent of Vancouver, they actually started him in Low A (ie: Lansing) THIS season which means that our placement of Warmoth (Dunedin) was more aggressive. I'm not going to waste my time looking over every player because I already know that I'm right, but in last year's class virtually every college player drafted in the first round except Kyle Wright was sent to short-season ball, and even he made a handful of appearances in the GCL before he was sent to High A. College guys who are immediately started in full season ball are typically pure relievers who can be rushed through the system.
This is hilariously wrong and common sense should have dictated that to you. Even the best college teams in the country (your Florida's) have numerous players who won't even sniff pro ball period, or even make it out of Rookie ball if they do get drafted, so how the hell can college baseball be the equivalent of High A where every player there has at least earned their way to that level? The Cape Cod league MAY be the equivalent of High A, but that is because its a collection of artificial rosters made up of the best college players in the country.