Gas is known to be noncompetitive and less pedigree driven somewhat similar to EM
Other fields like IM, pedigree is very important
JHU, MGH, BWH, UCSF, UMich, Penn, Duke, Vanderbilt, Emory, Barnes Jewish, Uchicago, Northwestern, Stanford, UCLA, BIDMC, Weill, NYU and a bunch of others don’t even consider DOs (they may interview on occasion but the rosters have no DOs)
Also a very middling MD students can match mid tier university IM with ease. This isn’t necessarily true for DOs. Look at the rosters of places like Loyola and UIC