In all honesty, it was terrain they were both fighting on and correct me if I'm wrong but was the terrain like Obi-Wan's pet and responded to him to help him out, or were they both capable of using the terrain? When militia fight terrain is always important, both look to find the advantage, and not finding it to draw the other from his own advantage.
Obi-wan was trying to get a favorable position with the Terrain, Anakin was tunnel vissioning Obi-wan not paying attention to any of the changing terrain and only focusing on his masters blade work and his own blade work.
Mentallity does not equal saber skill in star wars they are 2 different catagories.
If you are lumping them into the same catagory you are wrong end of story move on.