Except "prestigious" (even "semi-prestigious") and "community college" are mutually exclusive. You may be able to get a satisfactory education at one, depending on the college and the field of study...but prestigious? No way.

this discussion is about UC -- he's talking about the fact that the admission rate for many campuses and majors is actually higher for california CC transfers, with some UC campuses still offering guaranteed admission (TAG) under certain conditions.

i think the "semi-prestigious" refers to the fact that some bay area CCs are known as transfer feeders for Berkeley (which does not have TAG, so you have to be competitive among CC candidates).