@OhioLion -- the Quote function is not always working for me (too many windows opened, which is taxing the memory).
But to answer your question:
As I wrote, in my quick review I thought it was a TD, but the ref called it really early, and Robideau grabbed a leg just as the TD was whistled.
So it goes back to whether the review panel thought control was established. Duke had a cradle while Robideau had a leg, then Robideau lost the leg for a sec or two, then he got it back. The mat ref probably wishes he hadn't called it so early, though in SV, you are supposed to call it as soon as you think points are scored.
In looking at it again on replay, I'm not all that surprised it was overturned. Control wasn't established long enough. Would Duke have gotten control? We'll never know. Cradles don't generally break locks around the offensive wrestler's leg. If the offensive wrestler can put the defensive wrestler on their back, then the defensive wrestler usually releases the leg lock to try to roll off their back. Certainly not a sure thing, either way.