I will again reiterate the fact that we did not get a story that made much sense in terms of Anakin’s fall.
The Jedi Council had grave concerns about training Anakin, yes? So why make him the student of a just-promoted new “Master”? Stupid! Of course it never matters; we get no hint whatsoever that Obi-wan fails to “train him as well as Yoda”. In fact Obi-wan is supportive of Anakin in ROTS all the time - even when the rest of The Order has its doubts.
As many others in this thread have pointed out, Lucas was unconcerned about making the PT and OT makes sense as a whole. He wanted to tell a specific story about how Anakin went to the darkside even if it was not believable and contradicted his original films!