Also, it'd be helpful to know when and where your selection is from, Phil.
If it preceded that Justice League of America submission of mine year wise, for instance, there'd be no contradiction. Superman's implicit suggestion in your scan is that Wonder Woman trains herself to become ever faster.
Wonder Woman in that storyline is NOT trying to kill Clark.
She's trying, in fact, to save him.
The premise of that story is that a machine called "The Vanishing" caused many of the people, including Lois, who are closest to the heart of Clark Kent, to disappear. Possibly killed them.
Clark wants to use the machine again thinking there might be a way to reverse the process and save his loved ones. If he's wrong, though, he very well might die himself in the process. Diana knows this and his trying to dissuade Clark. But the action with all this weaponry is a bluff on her part. And Clark knows it. And calls her on it "You'd kill me to prevent my suicide?"
The point of the Flash Clone episode is more to show the kind of thinking and adaptation and strategy Wondy uses in a fight. Time periods can't be ignored if we're going to have a serious discussion about this subject.
What Deathstroke can and did do to the Flash of this era makes Wondy's showing look very good indeed.
I'm serious about making a good reference log for this thread, and, thanks to helpful associates, currently have expanded resources.
Experimenting with the best way(s) to present.
Cover gallery, for every magazine I could determine on page 1.
More should follow, interspersed with the normal dialogue here and completely at random, till there is one for every major page of images.
Spider-Man, away from the tall buildings of New York, is reduced to helplessness against all but a handful of foes. Batman suffers similarly outside of city settings, as there are no shadows to melt into. Sandman and Clayface could not function in the middle of the ocean, Aquaman and Namor are shrimp in the desert.
It's worth noting that environment has a profound effect on the Flash, too, and that he often does not take such things into account until he's suffering from the reality of that: