Imo, it's just that LSC & GGG are both better fighters than Wilder. Our eyes can tell us that.
We don't even have to use their resumes, but both LSC & GGG has faced more Top 10 opponents in their division than Wilder has (only 1).
If we keep it funky, you should be questioning Keith Thurman stans why they fukk with Thurman and not Wilder, when they are much more similar in their career/resume than Wilder is to GGG & LSC. Thurman is also an undefeated KO artist, who currently is a Champion who has only faced 1 Top 10 opponent as well