Is that on Austin's podcast ? I'm quite curious about it. I've heard Austin before talked about how odd that seemed to him because he basically had no submission hold in his repertoire apart from the old Million Dollar Dream that he actually busted out at the Garden too, leading to a pin (that was something, but not enough).
Then again, one can argue that the I Quit gimmick, with the live mic, can be obtrusive to the style of match Austin & Bret would want to have. Especially after Bret & Backlund laid an egg with the same stipulation. So, that was a way to have one guy having to quit while not getting a mic in the way (well, plus putting over Shamrock's character, like I mentioned before)
Its Edge & Christians. Was terrific.
https://art19.com/shows/ecs-pod-of-awesomeness/episodes/1260e1ce-5d04-42ac-ac51-7a222bdad6af