Somewhat surprisingly, Izzy doesn't have much dog in him does he?

[Toothlessjoe]

Izzy doesn't react well to long term pressure. He wilts.

 

[Paladin]

The thing with RNC's is some are more of a constriction where you slowly cut off blood and you can fight that off or there are the other ones where they are pulling their bone through your throat. The 2nd one is why guys tap immediately, after you get an angle on someone's throat it's extremely painful. DDP is a strong guy, I'm sure it just feels like your throat is being crushed.

Perfect explanation!