Good stuff... Like Joe says above: go to some college games at varying levels and it won't take long to figure out the difference. A big difference you'll see at the individual level is the bat. The truly talented have great defense and really hit it hard. And some of these kids play at Ivy D1, low D1, Juco, or a top D3 for varying reasons: searching for higher academics, engineering or premed requiring lab classes which are hard to attend if on the road a lot with baseball, or they were a late bloomer not getting the top D1 attention early in the recruiting cycle, or simply not being at the right place at the right time to be seen. Top D1 teams have greater depths of talented position players and pitchers.