Baelor's Strategy For Dunk's Trial of Seven Was Cut From The Show (Why They Cut It)

In A Knight of The Seven Kingdoms Season 1 Episode 5 we saw Dunk's trial of 7, what we didn't see was the main strategy that team dunk used in the books. Baelor Breakspear Targaryen was the man behind this interesting lance strategy in the books but I actually think cutting it from the show was the right idea. Here is what the strategy was and why I think it was cut, do you agree?