You are speaking of empirical evidence. Sorry, but such "evidence" is famously misleading. See
www.blackjack-scams.com/html/prog__systems.html
Well, of course if you know in advance what is going to happen, you can gain an advantage. But, looking at such stats in an early part of a shoe has nothing to do with later events. This has been shown countless times.
No, in no way is it the same as CC. CC is a scientifically proved, and rather obvious, method of taking into account ALL of the cards that have been seen, giving a clear view of a change in probability. "Card-clumping" methodologies assume that shuffles introduce biases and that past results in a shoe or prior shoes affect future results without any attempt at scientific measurement.
No reasonable mathematician cares about live exhibitions. They simply have no place in mathematic studies.