The big difference is that it puts several jobs per room on one card, instead of each job having its own card, as in the first book. You would no doubt come around to doing this eventually just having the first book as you fiddle with the system.
As to the "infraction game" (leave stuff out, have to pay to get it back), I don't see it working for some or even many families, just as allowances don't work as a chore motivator if children are smart enough (or jaded enough) to see that someone will eventually feed the dog, even if they don't, and I doubt that some parent will make their child pay to get their homework back if it gets left on the kitchen table.
The book is okay, but definitely read at the library before you buy it. You might like it better than the first one. I did not get much out of the Buzz Word cards, for example. I do like it better for the streamlining of the original system. As others have said of both books, their time estimates are 'way off. Something you don't want to do ALWAYS takes longer to do than you think it will. Leave off the time estimates and just think, "This job first, do not stop till it is done. On to the next one." I think the system works better for you this way.
You can also adapt this system to a To Do List, or even put it on your computer or handheld if you wish. Sidetracked Home Executives is the better of the two books, imho.