I've just read Supersons of Tomorrow for the first time. Well ... "read". (I didn't read every dialog. Some character depictions rubbed me the wrong way and some scenes were just ... I don't know.)
Unfortunately I don't remember if I ever called Savior!Tim "evil", but in case I did, I take it back. (But I still don't like the Savior costume and identity.)
I also take the "evil Damian versions" back. There isn't any detailed information about the Damian of Savior!Tim's future in order to have a clear picture of his character. (And the other evil Damian I remembered was just some hallucination in an animated movie.)
Since yesterday I've been thinking about the word "evil" and how difficult it is to describe. The internet suggests different definitions and so far I haven't found one that coincides with my perception (Wikipedia has a nice article about the topic). Thinking about "evil" sheds also a new light on the term "villain". Until now I was under the impression that a villain is always an evil person. But I realized that's not true, at least not for me. There are a lot of villains that I don't consider evil, in a few occasions they are not even "bad".