That scene was supposed to show you how far gone Mustang is, but apparently the fan base got so much joy in seeing that they liked Mustang even more. I personally liked scenes where the Fuhrer fought; like when he fought Lin or when he charged into the building and fought a tank. Now THAT is an awesome fight scene. Nobody even stood a chance.
This has to be my choice, especially after seeing both the old series' and the revamp's. It's so powerful because for us bitter people, we get a bit of closure after one of the series' biggest heart wrenching moments.
I agree, the fight was awesome and a great show of their techniques. I have watched it on TV and Social Media and it never failed to get my attention.The Sasuke and Naruto fight. I think this is one of the best fights in Anime History.