Obviously what you say here is true. I do think MVDP could have some better climbing results if that was ever made a priority, but nowhere in the league of Wout.What bigger engine means, is that when it comes to raw power and prolonged efforts, that Wout has historically wiped the floor with Mathieu. That's where that comes from. Courses with heavy mud where you don't get any rest? Wout wins by a landslide 9 out of 10. Despite his weight, he also outclimbs Mathieu in mountain stages and it's not even remotely close. Same story, prolonged efforts. So i'm a bit baffled by the played ignorance in your post.
What I find interesting about this rivalry and the power comparison is the last two times they've competed in a TT (maybe 2 of the only times?) -- first-weekTour stages in '21 and '22 where both riders were looking for yellow -- the gaps have been small. Wout 3" over Mathieu in 2021, Wout 8" over a second-rate Mathieu in 2022. Somehow this seems the exception, but this is probably a separate category of power/effort.