SAT Subject Tests vs. APs

When Georgetown says that SAT subject tests and APs now both fill their ‘three subject tests’ recommendation, are they truly equal? Or does Georgetown still want to see SAT subject tests more than AP tests?

Personal background: I have 2 strong subject tests already (780 US History, 760 Math II) and 3 APs (5 Calc BC, 5 US History, 4 APES). I’m curious if I should take a third SAT subject test or if it’s pointless.