YMWV. I find the opposite. I find TUG harder to navigate due to the many different companies. Unless the question is a recent event, the question is easily found using the search bar. With TUG, I would have to make sure I have the correct words and the correct acronym to hopefully find what I want. Many WM owners have other timeshares, so TUG is a great one-stop shop, and you may get the same answer from the same person on both forums. For all things WM, nothing is more informative or has more WM experts, than wmowners. You will find former WM employees on wmowners as well as those in which WM is their only timeshare.
wmowners' layout is different because the forum has so much information (mostly) just on WM. Take the OP's question. With the knowledge base on wmowners, the OP could just type "signup II", "signing II", etc. and one of many threads would appear with the 877 number above, with experiences in dealing with unknowledgeable agents. The OP wouldn't have needed to wait for the response. There is an in-depth section on Exchanging with WM, including II vs RCI.
The value of TUG is, if you have a non-WM timeshare, TUG is the place. Look at Sue1947. Sue has 1500+ posts on all kinds of things on TUG. Sue has 4300+ post just on WM on wmowners. I find Sue to be an expert. If I was a WM owner, I would be interested to read more of what Sue had to say on wmowners.