"I had a hard time with XYZ" Is better.

"When a and b was difficult, but not a and c, that was fine." Is even better.

However, "I would have abc instead of xyz" isn't great." Depending on who it came from might be a wild goose chase.

So, overall, if the human can take it thought full, actionable, and accurate advice always wins out in technical spheres.

Personal development is similar, but it takes a strong person to take feedback of any kind. Mostly because there's so much subjectivity involved. Which, of course, washes away when 3 out of 4 people in a company of 400 all say the same thing.

I would say the quality of the feedback is more important.