Can you give me an example when someone needs to be more dead than someone else? Dead seems pretty extreme - I'm not sure you can be more dead.
Last summer, we went on a wonderful trip.
This summer, we went on trip that was even more wonderful than the one last year.
His playing was wonderful last year, but after another year of lessons, he plays more wonderfully than ever.
He plays the piano quite badly, but his sister plays worse than he does.
[not a teacher]