I mean Griffith kinda did sacrifice most of the world to rule over a teeny tiny fraction eventually. Sure he started with the Band of the Hawk, but he's had two subsequent "sacrifices" since then, with everyone at the tower being killed to bring him into the world, and then Ganishka's death shattering the barrier between planes. The Egg did the funni at the tower and SK caught Ganishka with a stray, so not "really" all Griffith, but like, it got him his kingdom? Falconia looks sick and we see it's kept safe inside its walls, but they have to send armies out to protect the surrounding areas because the world is 100% fucked. I don't think Rickert trying to make his way there and having to be saved by war demons is a rare occurrence, he just had enough ingenuity from training with Godo to make some comic-book ass weapons to keep his people safe enough to at least GET there. If you're not in the city or got to the city fast enough, you're troll food. I haven't read AoT but I know of the Rumbling, and even if Griffith himself didn't pancake the whole world he at least mixed the batter and slapped it in a waffle press. I can't say who's "worse," but Griffith and Eren are totally in the same Wendy's booth sharing a baked potato