It is an example of methodology. The guy attacks and then doesn't move. Because of that the coach there can do any old thing and all his technical mistakes are forgiven. He does not get good feedback. Which is kind of the reason you have a partner in the first place.
Honest resisted training pretty much breaks that cycle from the get go. And the instructor would only loose his arm once to realise
A. why you go the other way out of that arm bar.
B. why you avoid that move at all if you have old man shoulders.
I think it is less about style there and more about a trend to be avoided.
So the arm bar escape done more right. Just in case anybody wanted to know.
And factoring in that your partner is not just going to lay there like a chump.