Anderson's TDD isn't as good as Machida's at all. I'm a huge Anderson fan, but I'm still willing to admit that his TDD wasn't ever that good. Silva even has stated he doesn't like to go to the ground before and also he didn't even stuff Sonnen's TD attempts he was grabbing his shorts...
even Davis who faced Machida said he is very difficult to take down.. THIS COMING FROM A WRESTLER..
I'm not saying Weidman will or will not have a hard time taking Machida down, but it sure as hell won't be as easily as he took Anderson down. Lyoto has a solid team with him he's currently training with a all american wrestler from penn state which will be really beneficial for Machida especially with his sumo wrestling background experience.. here are some clips..
http://instagram.com/p/oRhVGpJ6bL/
http://instagram.com/p/oVpR5jJhwO/
Anderson would showboat to induce his opponents to mess up it has always been risky for him to do that. Machida on other hand likes to avoid being in his opponents striking ranges that's why people call him "boring" because he doesn't engage very much, but it's his style and it definitely frustrates his opponents.
For those comparing Machida to Anderson keep in mind Machida won't be showboating or keeping his hands down like Anderson does. Lyoto also moves a lot and the Mousasi fight is a perfect example of that..
IMO at this point of Weidman's career this isn't a good fight for him. He might be feeling himself a little bit because of beating Anderson and he could possibly get too careless and get caught with something. Machida wins via TKO round 4.