She's just too scrawny to be WW, and no amount of training will fix that.
Post proof or retract. There have been many examples of actor/actresses bulking up or slimming down to fit roles, some of them in this very thread.
Why not just call this what it is? Your standard preconceived hate for something you haven't seen. You've certainly established it in every thread about an upcoming movie you've ever entered.
For once why don't you wait to see a movie before you condemn it.
Ok, I wasn't even condemning the movie itself in that post, I was condemning a casting choice. I mean, MoS was solidly mediocre, and Goyer has proved to have an inability to write good DC superhero movies. I doubt I'll like SM/Batman, but I'll admit it may reach average if Goyer steps up his game. Still, we're not talking about the overall movie, we're talking about casting. This woman would need to gain 50 lbs of muscle to be the size of Amy Adams

She's about -50% body fat at this point, she's officially in the category of "scary" skinny. Even if she didn't need about 6 inches in height, she's not going to "bulk up" to Wonder Woman. She may "bulk up" to Anne Hathaway, if she puts in a lot of effort. I don't know what "evidence" to give outside of just looking at pictures of her. She doesn't have a frame thats going to be putting on enough muscle bulk.
There is also the acting to think about. I saw some F&F clips of her. To be fair, it was awful material, but she wasn't exactly pulling it off very well.
Also, go look up my posts in the X-Men DOFP thread and the avengers 2 thread (and probably the Thor 2 and Winter Soldier threads, although I'm not 100% certain I've posted in them). They're all positive. The worst casting choice Marvel has made in their movie line is Scarlett Johanssen, and while she's a poor Black Widow (too short and very fragile looking) she's still a better choice for her character than Gadot is for WW. I have been wrong about one superhero movie. I thought MoS would be horrible, it turns out it was just mediocre. That's like hitting a single instead of a home run in baseball. I was off a bit, but the general attitude was right. DC will get no benefit of the doubt and an assumption that everything will be horrible for every movie with the names Goyer, Snyder and/or Nolan attached to it, and they deserve it.
That still has nothing to do with Gadot. You'll notice I haven't said anything about Affleck in threads. I'm willing to give him a chance. I actually liked him in Daredevil, and I think he can pull off Batman, and do it much better than Christian Bale. He's also over 6 feet tall and generally has a build that would work with a superhero, or at least be able to get to the right point fairly easily. Gadot has nothing positive going for her, and a lot of huge problems. When the person cast has so many blantant, obvious problems, its not something I'll ignore. Outside of joke casting someone ridiculous, I'd be hard pressed to think of a worse casting choice if you were even half seriously trying to cast WW. Maybe Mila Kunis would be worse and still be at least a partially serious choice, but outside of picking an even more obscure skinny model/actress like Gadot, she's about the bottom of the barrel for choices.
But, again, she's eye candy and they will probably have to pay her literally 1% of what Affleck and Cavil will be getting, so she's cheap and somewhat attractive, which is all the studio cares about.