Movie: Redbelt. WTF was with that ending!???

Question

Either I have some serious brain damage or that ending made no sense at all. It just left me dumbfounded and in shock. Wow.

Can anyone explain the reasoning to what happened?

Answer 1

Mike showed genuine honor by taking down the bad guys, even when it would have been easier for him to walk away. The Asian master recognized this and gave him the red belt, which is the highest symbol of honor.  

Answer 2

sorry i cant explain, i was thinking exactly what youre thinking !!

it made no sense , i only saw it once, maybe you could watch it again to understand it better.

the 2nd time around in movies normally helps to figure out things