I will amend my “10%” statement to acknowledge that OP will indeed get a boost at MIT and Caltech due to him being a USA(J)MO qualifier. But it’s my observation that it doesn’t carry as much weight at other highly rejective schools and at those schools he’s an average excellent Asian male applying RD* to CS (maybe even from an over represented state?). So I stand by my 10% estimate which is definitely above that of most unhooked RD applicants.
(* - assuming he’s applying ED to UPenn or CMU)