A couple of years late.
Yes, as far as I know it is the only one that supports color grading.
All my videos from last weekends dives had a slight green tint to them. I was able to quickly color grade them, edit them, and export them.
And the library management is pretty good. The video below is the long form video I edited. I was able to duplicate it easily and chop it down to the shorter videos that I know most people only have the attention span for (that I release over a period of weeks so I don't overload people).
Honestly Lumafusion and the 12" iPad Pro is what convienced me that the iPad can actually be a content creation tool instead of being just for content consumption. Short of some VPNs I need for some client work, I am confident that I can just travel from with iPad Pro from now on.