If you'd put in that 'primarily', I doubt anyone would have argued with you, although as several people have told you, you're wrong about the intimidation - there's plenty of shit-talking between pure martial artists in the current run on Iron Fist.
Basically, my way of thinking is this - if you're known first and foremost as someone who can kick ass in combat
Hence, Captain America is a martial artist. Thank you and good night.