The pro is legit. I wore it for 11 days straight backpack mule deer hunting in very windy, nasty conditions. Incredibly warm and weighs very little. Excellent water repelling of the outer fabric and the down itself. It is overkill for a lot of situations, but if you need warmth and ultra light with good weather resistance...it is hard to beat.
And absolutely not in the same league as the Costco jacket lol.