I have read some of Lawson's work, but not that one. I would say that her work is very easy to read and straightforward, if perhaps a little sing-song at times. I think she's very accessible for individuals who, for whatever reason, have difficulty reading, or who want a quick practical introduction.
Attwood is a bit more formal. He doesn't use colourful language but does use stories to illustrate his points. He's also quite straightforward and direct. I find he goes into a bit more detail. Suitable for people who are logical, find Lawson a bit patronising, or want a more detailed explanation.