Com'on bro! There's a limit to ignorance. If Saudis are saying it, at least I believe they will stand on their words, otherwise there's a lot they will lose. At least Pakistanis will turn very much negative towards them if their airspace is used to bomb Iran. But I'm sure this wont happen.
Now coming to US weapons and stuff, Saudi Air Force has Typhoons as well, there aren't just American aircrafts in their inventory. This theory that American weapons wont shoot other American weapons is NOT so reality based.
You guys should be glad that this Muslim country has come up with this statement and instead I'm seeing Iranians going crazy on this as well. Search for some brain in your skull, guys.
Source:
http://www.defence.pk/forums/arab-d...f-aircraft-en-route-iran-5.html#ixzz234cf29wU