In what world is a biochem degree significantly easier than an engineering UG degree? In fact I think a case could be made that biochem is harder. This is from someone who did a molecular bio major with a materials/nano mech engineering minor.
Engineers would always talk about how hard their major was (it is rather difficult) but they would pull C's while I got an A/A-. Yet I struggled to get B+ in the biochem or molecular series. Go figure.
IMO: 3.7 > 3.4 but they both have a decent shot of an acceptance given a competitive DAT/ec's.