i think the exact opposite - i feel that people UNDERESTIMATE their gre scores. unfortunately i did not get accepted to any of the programs that I applied to, i spoke with professors and admissions at most of the programs that I applied to and the common thing i was told that held me back/want to see improved was my gre scores. advice coming from someone whose application process didnt go too well - EVERYTHING COUNTS, dont underestimate any part of your application because although you have worked hard to get where you are, there is someone with a stellar application and you will unfortunately be compared to them. i did not at all think i would be rejected from every school i applied to and neither did my advisors, but it happened, and unfortunately it may happen to you too - but apply smart, dont apply to only top 10 apply to a spectra of schools and programs, and if you dont get what you want, dont wallow in pity - take some time to let it sink in (i made sure to have some time for myself after this ordeal because honestly, it does hurt) but use it as your motivation to come back with an even stronger application.
best of luck to everyone!