Talk:Okita Souji/@comment-26491543-20170718063010/@comment-27971189-20170718084340

Another reason is difficulty spike post-Salomon.

As said, Quick Servants as primary DPS relies on stars to keep their advantages high, critical attacks to be exact. Without star-enabler like 2030 or Innocent Monster to fill the moment you can't generate stars its hard to keep high damage; newer enemies doesn't care about that.

You can't ask Melt to stop throwing Taunt so Okita would get one turn to let her farm stars calmly for next turn. You can't asked Lobo to stop doing crit fest. You can't ask Megalos so his AoE not crits before you get 40-50 stars so all five cards are 100% crits.

Buster and Arts Servants have advantages that they do not depends on star to operate properly; stars only make them better than usual. What make it worse, Buster can access Merlin, while Arts can go anyone, anytime, anywhere.

Combined with Hikaru explanation, that's reason why Okita fall from top tier and why JP top tier is now dominated by Buster with either good survivability or damage / critical boost, followed by Arts. Its not only about the Servant, you have to consider what kind of enemy you met.