Instead of M$ just doing simple c/r table disc checks like they used to do, which only got a few thousand or more banned which were playing bad-rips or had buggy firmware in M$ previous ban waves over the last few years.
This time, M$ themselves, grabbed a few different boxes, and modded themselves with the various latest ixtreme firmwares, and coupled with this stupid online internet checking program, run thousands of internal tests.
And then when they were happy with their results, when live with a new expanded series of c/r table disc checks.
This checks basically were done in such a way to without making a mistake id ever single modded system, no matter what type of disc they were playing, even if nothing but originals, or perfect checked rips, they would still know.
The reason is the current batch of firmwares (basically ixtreme v1.4 and higher), were too complexed, all this stealthing,checking,stopping bad rips,checking table of stored crc's, made the modded drives behave a little slower, and not as smooth as the original stock firmware, when M$ ran their now nicely tuned expanded c/r table series of disc checks.
Even tho, the firmware was perfect, and the discs were stealth,checked,and cross-checkec, the firmware was off in a small amount of milliseconds when faced with the new expanded disc checks, even if the disc in the drive was original, the firmware slipped up by a even few less milliseconds compared to a matching stock firmware.
Those that slipped thru this massive ban, were ones which either had not care much about having the latest and greatest firmware and matching games, and were still running last years firmwares, or non-stealth ones, or ones which never used their drive even to play original games, both of these cases were totally rare, maybe less then a few hundred, so not a worry to M$.
Anyhow, that is it for my thoughts on the matter, 1am here, time for some much needed rest, as long busy day tomorrow.