I’ma quickly list most FE final bosses and my opinions
FE4: due to his unique skill barely takes damage unless one holy weapon, and he can’t really kill you. so weak but tanky? bad boss.
FE5: Who? Bosses next to him with tiles that grant +10 or so to a game with 20capped stats is scary AF. basically stat balls are strong, bad final boss, hard final chapter.
FE6: Lol. Holy weapon wins.
FE7: True damage is scary basically, swarm him and don’t let them get a turn 2 is the way. Kinda mediocre
FE8: Same as 7, but easier as he wastes a turn.
FE9: don’t really remember, but hard mode and final boss moving is plenty scary. Actually I remember him having capped stats are brutalizing most of the team.
FE10: Alot of defenses and better have a healer.
Awakening: Brutal to reach, ok to defeat
Fates: Oh god there’s another form. Not to bad, once you reach again.
3H Golden Deer: Oh god even with the side bosses down I’m getting bodied like a ragdoll.
My own Hack: Entire game hyped them up, then they get stronger so it was designed to be punishing and most of the time you are supposed to lose people. Had to add Miracle to legendary weapons so you don’t lose 4-5ppl.
So final thoughts: Either the boss is weak, and the side bosses are really strong for whatever reason. Or it’s a tough ass slog to reach them is really what makes the chapter hell and the last boss is just easier so you don’t restart. Or low capped game with Boss who hits caps, and sometimes above makes it really challening cause you can’t statball them and actually need healers and planning.
IMO: depends on your game. Is it one big bad? Are they strong? Or do they have lackeys that are annoying? How you make the final map (oh god Takumi plzzzzz) also drastically changes how “hard the final boss is”, but then they don’t remember the boss as hard, but the chapter. I went with the one big bad is better then 99% of the world in fighting route, and they can and will actively kill you