I agree in the sense that your gre quant score isn't a great measure of ones mathematical ability. For someone with a quant background it's more a test of concentration and attention to detail as none of the problems pose any difficulty when time isn't a factor. Coming from a finance background, however, I think the score is more important. Admissions officers don't have much proof that you're good at math. Moreover, for competitive programs a low gre score is any easy way decide between the many well qualified applicants.
