Zoro's likely future opponent being hyped to ridiculous levels is par the course with the OP fandom. According to Zoro stans, King was: more durable than Kaido; faster than G4 Luffy; had CoC; could easily beat Katakuri; had awakening
Reality:
No awakening; no CoC; weaker than Yamato; weaker than Katakuri
Shiryu is not stronger than Kuzan; he'll be a tough fight for Zoro, but he won't be among the strongest in OP
Reality:
No awakening; no CoC; weaker than Yamato; weaker than Katakuri
Shiryu is not stronger than Kuzan; he'll be a tough fight for Zoro, but he won't be among the strongest in OP