More like 2 and 1/2 stars. I found the plot moving too slowly for my taste. The number of superheroes a bit confusing and the resolution too happy for my taste. Those are the things that bugged me a little. On the other hand, I liked the lead character, Thom. Strong yet self conscious, understandable since he's hiding from everyone. I appreciated his journey to being true to himself. His doubts, his persistence and the fact that he doesn't really know what to do was endearing but all these good things where overshadowed for me by the anvils plot, the roman à clé plot twist who is Superman, who is Batman, etc. After a little while it bug me.
I read it in spurs and forced myself to finish it. YMMV on this book.