It's not an oversight. In Japanese it's called Ambush (or Surprise Attack). It's also Coup Bas (Cheap Shot) in French. Iron Fist boosts Meteor Mash since in Japanese it's called Comet Punch. So, it's unlikely they'll change that because of the English name alone.they might FIX that oversight in this generation ;)
or perhaps that is just wishful thinking...
EDIT: super ninja'd