Those movies are crap, anyway. The only reason the murderer doesn't win all the time in movies is because if the bad guys had brains, the good guys would never win because they'd know not to attack one at a time. It's completely okay to 3v1 someone if you think they'll be a tough fight. If you're a criminal, you die or spend the rest of your life in a box if you fail, so you do it right the first time.

[ Take it from a killer who has done that. More than once. Both the 3v1 and the failing because certain.. people, disobeyed orders and went off on their own vendettas, even if it's still hard for Emerald to admit that Cinder isn't perfect and may have very well lost her way. ]