Lmfao sure those are bad, but do you realize that fans of all of those also like Sabaton 90% of the time? The fanbase is almost the same.
Megadeth, Anthrax, Slayer and Pantera have been around for way way longer than Sabaton. They are some of the most successfull metal bands of all time. And their songs became a part of pop culture. So obviously they will be more popular and more liked by people who dont care for metal. Comparing the numbers theese bands and Sabaton generate and then claiming that Sabaton are underrated is idiotic. Sabaton are again one of the most successfull modern metal bands and they are possibly the most successful power metal band as of right now. How any of this equals underrated idk. Well i suppose you are trying to somehow make them look like an overlooked or disliked band. Which they objectively are not.
Motw are one of the best prog/death bands. But cope i guess.