In short, he liked it, somewhat unexpectedly.
As I said earlier, this isn’t Shakespeare. It follows the conventions of a fighting anime quite closely. However so far this is turning out to be one of the finest examples of the genre with a much higher level of plotting and characterization than we usually get.
I thought it was about as good as early Naruto. Unfortunately, extensions of that one are not universally praised, which makes one somewhat concerned about the future of Accel World. Jonathan shares that concern.