Well, Hertz LISTS the Focus as a Compact, but in practice I've seen Compacts to generally be a Toyota Yaris Sedan. Fusion is indeed a Standard but I haven't seen too many of them at Canadian airports at least. They seem to price Standard and Fullsize the same, so if you book a Standard chances are they'll just give you a Fullsize (Camry, Altima, or Impala usually).