>>52156185On the harder side maybe. I'm still early game so I can't tell for sure. The Star bosses are the hardest part by a wide margin with their Revavroom Deluxes. Rushing the various shops for battle items has helped a lot. Part of the difficulty comes from not everything being documented. Even if I did already beat Scarlet I don't remember everything.
Length wise it is decently long. You have 8 gyms, 5 titans, 5 star bosses. Routes are decent again though there aren't any dungeons until right at the end where the hardest fight in the game waits.
