<p>If you are accepted, you will receive need-based aid (as long as your EFC makes you eligible) in regardless of your merit, so stats are irrelevant.</p>
<p>Your merit is only considered in the merit-based scholarships (which require separate applications), which are separate from need-based aid, which is automatically considered for anyone who selected the option on the common application.</p>
<p>Generally, I think for WashU, financial aid does not play too big a factor in admitting the student. (until they almost run out of money anyways, which is rumoured to be around the last 10% of RD applicants)</p>