I do not actually mean with all other attributes equal. I've never personally seen anyone interviewed in plastics with a 206, but more allowances for things like being fourth quartile and lower step scores are made for those from fancier schools in the rank meetings I've been involved in.
I don't know exactly how the interview selection process goes because I've never been involved in that, but I know with my previous program director a point system was assigned to different applicant attributes and they included things like step scores, AOA, and school prestige. Interviews were granted based on this point system, but I don't know how much school prestige was weighted vs other attributes.
Anecdotally, I did not attend a fancy med school and when I compared my interview offers with those from fancy schools on the interview trail and compared other things like step scores and number of publications, I often compared favorably in terms of scores and pubs but didn't have nearly the number of interview offers that they had, nor did I get many interviews at plastics programs considered to be top twenty. And I was told my letters and personal statement were great, so I think part of that may be attributed to my school's prestige. I actually think my med school was great and I got excellent training there that prepared me well for residency. I don't think the name of the school should matter to people, but at least in plastic surgery, it clearly does.