Yes, (old) 3.5 Sonnet is distinctly worse at emotional intelligence, flexibility, expressiveness and poetry.
Are you also implying that new 3.5 sonnet is better at those things?
No, Opus is better. I have no experience with 3.5.new.
Are you also implying that new 3.5 sonnet is better at those things?
No, Opus is better. I have no experience with 3.5.new.