"much faster" is ambiguous here. Ride 150 miles a day every day for a week, don't over-eat, and you will lose much more weight than you ever could from HIIT. On the other hand, that's a lot of hours, and HIIT will easily win in terms of weight-loss per unit time.

How is it ambiguous. You clearly understood I meant calories burned per unit time.

The ambiguity is what unit of time you care about. With HIIT you lose more weight per minute of exercise you do. With a lot of LISS you can lose more weight per week than you could with HIIT.

Understood, but the parent I responded to was talking about efficiency so I thought that was the context.

In my experience I'm not so sure about that either. I can't repeat centuries day after day when I am out of shape and need to lose weight. If one can, it's very unlikely he/she needs to lose weight.

Paul, you can lose all of your weight without working out at all!

You don't know anything about my weight! :))

For sure. But the discussion going on here (and in TFA) is the balance between weight loss via exercise and weight loss via lower calorie consumption.