I find that hard to believe - most likely the tests you've done were not really exercising 120hz. It's easily noticeable side-by-side even by someone who has no

I find that hard to believe - most likely the tests you've done were not really exercising 120hz. It's easily noticeable side-by-side even by someone who has no idea how monitors work. The easiest test: move the mouse cursor in a circle repeatedly. The trail at 60hz will complete the full circle, while it will be barely visible at 120/144hz.