This is a less than mediocre product. Instead of offering the players a one stop document they can use to update their old WWW characters to W20 it is just a collection of copy & paste from the old WWW main book.
When it comes to things like new gifts, weapons, abilities or totems this pamphlet (can't call it a book, it's too small) brings almost nothing to the table, the weapons chart for example is widely spaced and big while offering only 14 randomly chosen guns compared with the old Frontier Secrets which offered 56 guns on only half a page more. The two new totems are copied almost verbatim from the old WWW core and Frontier Secrets, but they are also hit with the nerf stick for no apparent reason. Gifts are even worse off, a random grab bag that offers little excitement to old hands (some old favorites are absent). I could go one about the WWEP, but it would be like a broken gramophone record.
If you want to play werewolf in the wild west don't buy this pamphlet, buy the old books since they offer more bang for your buck especially since they aren't so different when it comes to rules.