They don't pick WRs well, but their rate for picking WRs has been about the same as their rate at picking QBs! (Ducks). They are the worst at picking DBs though.
Granted, these positions seem to be the positions that everyone has difficulty with.
But still, Brady, Davey, O'Connell, Kingsbury, Mallet, Cassel, Robinson, Garoppolo, Brisset, Etling, Stidham. That's 11 picks and 3 hits (Cassel, Garoppolo and Brady) though Brady is the greatest hit in NFL history. At the WR position they are at 14 picks and 4 hits (Givens, Branch, Edelman and Mitchell [not counting Berrios since he's playing ok for another team as a late 7th rounder]). It's about the same hit rate. Don't look at the DBs though--it is horrifically bad.