Logistics win and loose wars. Using such high value platforms & weapons in this way is not cost effective. Super hornets are to deal with high tech adversaries like advanced MIGs, SA11 missile launcher networks or warships – not pickups or even captured American tanks on the ground. Anti-tank helicopters and drone launched ordinance make better sense. How many hundreds of thousands of dollars per enemy life are we going to budget?
By the way, just as biometric keys on handguns stop them being used on the owner, surely tanks and artillery given to new allies could be fitted with systems to disable them in the wrong hands? Aged passwords would do the trick as would satellite communicated directives.