Because in a show down between wackos, Iran wins hands down. The Sunni Saudis only aim for world conquest via Islamic domination. The mad mullahs of Iran have a larger goal in mind - they want to bring the entire human race to the Islamic Paradise - aka human extinction.
They did declare war on the US in 1979, a state which still stands. Just because someone is not overtly acting out, does not mean they aren’t working on some surprise in the dark closet ... in Iran’s case it is ICBMs with accurate guidance and MIRVed nukes. The more dead (enemy or Iranians) in a strike the better the mullahs feel about their idol (the 12th Imam) coming to lead the battle for extinction. They are clinically insane.
Wouldn’t it be interesting if some hacker could find obozos secret bank account in Dubai?