Why is SnS so disgustingly good?

Maybe it isn't as great against other monsters, but at least from trying it out against Seregios and Lagiacrus, it felt so much easier going against them compared to a lot of other weapons I was playing with.

Perfect guarding against Seregios just gives me consistent free damage from the counter slash afterwards(his move with the two feet stamps is like a guaranteed 200+ damage alone using perf guard into counter) and even if i mistime my guard, none of his attacks will ever empty my stamina.

Lagiacrus is sort of harder? but he can't punish you either unless you go mad greedy with full combos. even guarding his electric blast attacks(which I do only when I know I can't get out in time) won't kill me since he barely does enough follow up attacks after to kill me, while i just walk away and self heal in a second.

Free dash attack that doesn't consume stamina, easy item access while midfight to enable self buffs and heals, perfect guard access which is easy to do that has strong counter damage after for free, and easy combos that do good damage? What the heck does this weapon not have? Reach?