Bigger is not always better.
In my opinion it was not wise for Nosler to compare a 338LM to a 33 Nosler with a 225grain.
Though 225Grain is a bullet weight that my 338/26-Nosler shines at. That 3025fps for the 33 Nosler seems pretty legitamate, I can go faster than that. Compared to the 338 LM from Hodgdons reloading at 3046fps with a compressed load of Retumbo under a 225.
Here is how I see the "performance", if I missed your favorite 338 or you disagree with my order, remember, this is just my experience in life, your life is different:
338-378 Wby
338 Edge +p tied with 338LM improved
338 Edge
338 Lapua tied with 338 Norma
338 RUM
338/26-Nosler
33 Nosler
338 WinMag
338 Federal
I don't always need a 338-378 but when I do, BOOM. It's on it's way.
I don't always want to carry 16lbs 338 Edge but when I do, for prone or bench I love it.
I love the hunting aspects of my 338/26-Nosler. If I were to do it again, would I have a 33 Nosler. Meh. I got mine. I bet it will fit lots of folks needs better than the 338 RUM or 338WM.
338 WinMag, I rechambered my 338 WM to 338/26-Nosler. As a 338 WM, the rifle didn't excite me because of being limited to 225 grain as a 338/26-Nosler.
Anything I didn't comment on, I don't have. I have been behind the scope of a 338 LM. Meh.