Russia’s economy is almost entirely based on oil. The Saudis can cause massive problems for Putin by under selling in their markets and weaning Europe off Russian oil. Now if they could only get natural gas to Europe too.
Russia has a diverse economy where oil plays a large part. They took 20 million casualties and drove the Nazis from Russia
Saudi Arabia runs a both brutal and effete Muslim welfare state which depends 100% on oil to keep their 3000 princes supplied with whores and keep the Sheeple from rioting
I’ll bet on the Saudis cracking first