a knife agianst two people with a shotgun and knife. uym yeah i would have given them my money and cellphone. yeah he got lucky. but seriously i would have jsut gave them what they wanted. kung fu master or not im not stupid.
plus if they shot him below the waste, its not attempted manslaughter.

also he knew where to stab to kill them, thats what marines teach. he could have stabbed them not to kill them.