Not they are not. I would never equate Jui Ming with Kau Jung.
From many TOB post I've read, I get the sense that many fans like Kau Jung because they considers him fun and playful. So, when u said 'i still prefer ray as d cheeky n humorous zhui ming', I thought u might be one of the people who like Raymond 'cheeky n humorous' because of Kau Jung.