I'm not so sure about that, though it depends how you measure it. Commercially, I would imagine Gilmour walks it. He can easily fill major stadiums, and album sales have been massive.
Artistically, it's a matter of taste of course. Frankly, I like both, though they are totally different. I have had the pleasure of experiencing Gilmour's Comfortably Numb on two occasions live, and both have been memorable. The Pompeii and Gdansk concerts are both recordings I could (and do) play frequently. But then I also like Waters' versions.
Different does not have to be better or worse, especially when they are both very good.