Those are not favourable circumstances, those are character strengths and weaknesses. Anakin's rage is his own shortcoming, and Obi-Wan's excellent use of terrain is a proof of his tactical superiority. It's like saying Anakin beat Cin Drallig because of favourable circumstances, which circumstances are he is a better duelist and stronger in the force
The point wolf was trying to make was that Anakin was the better duelist and the stronger force user, but his mentality got in his way.
He lost in the mind not in any actual skill or strength duel.
Anakin was the more skilled fighter then Obi-wan, he was the more powerful Force user, but because mentality and circumstances Obi-wan won.