The last time he was called out on such moronic false equivalency between the two, he pointed out that gay men are being executed. Of course, that hasn't happened since 2013, which was on the basis of robbery and rape, and hasn't happened on the basis of homosexuality since at least 2003.
I wouldn't waste your time.
If the US and British citizens ever get off their asses and force their governments to cut ties with the Saudis, Saudi Arabia will be screwed. While Iran has been operating efficiently and thriving despite being under unnecessarily punitive sanctions, and their military and proxies have dominated challengers for decades, the Saudi Arabian government has squandered endless wealth.