OK, here's the situation as I see it
Sifu Abel. Upset that Coach Ross has given up the majority of "traditional" training. Feels that Coach Ross is disrespecting the CMA with his approach.
Coach Ross. Feels that Sifu Abel's training produces pretty forms, but not fighting ability. Thinks the "traditional" method is inefficient.
Since both of you train people, why don't each one of you train a fighter, and put them in the ring against each other? If there's a lopsided victory, we'll know if one method is better than the other. If the fight is close, we'll know both methods are valid.