Mummy 3... good or bad?

I went to watch Mummy 3 on its opening day, in fact I took 1/2 day leave just for that. Usually I watch movie alone after work, less distraction from noisy cellphones, baby cry etc. I did same on Dark Knight, but that movie is a different story.
Anyway, Mummy 3. First Rachel is replaced by Maria for Evie role. There is a lack of chemistry between Rick & Evie on this one. Second is the plot, I feel the filmmaker rush up a bit, there are some good comedy element, but easily forgettable once you got out of the cinema. Third is the mandarin speaking of Dato Michelle Yeoh, wish it has more precision like Crouching Tiger. I'm a "banana man" but i feel the pronunciation aren't sound like a pure Chinese. Another thing is "why on earth daughter speaks English to the mother" when over the course of the movie they commune in Mandarin?
Mummy 3 is that bad... like Mummy 2, it fails to live up the success of 1st Mummy film. wasting my RM10 ticket money. Regret watching this.... kanasai