It looked too liquidy to me. Like the fire stayed where it was too long before burning out, or the torch was giving off too widely-spread and long-lasting flammable vapors.
I guess it should have been snappier. I'm not sure what needs to change, because I'm not a CG artist.
I assure you, as my cousin set up the fire twirling club at Melbourne University, i know exactly what a flaming torch looks like when you wave it around, and that is pretty much what it looks like.
Looking at it again, frame by frame, i think they must have used real fire 'planted' into the scene, because it's almost too perfect.
Aqizzar; fire actually isn't all that bright, especially torch fire. It's better than nothing certainly, but a flaming torch generates
very little light. Hollywood usually massively exxagurates how much light a flaming torch produces because the amount of light a real torch produces isn't enough to film anything useful in.
Also, the length of time the torch burned for suggests the liquid was similar to the low-temperature slow-burning reactants used in fire twirling, which do in fact tend to produce a fairly 'dull orange' flame instead of the bright white flame you get from something like a bonfire.