4.5? I beg to differ....
I liked the fact that even though Superman is invincible, Metropolis is not. The city takes damage as chaos reigns. This feature has to be one of the greatest decisions ever made for a videogame. After all, protecting Metropolis and its citizens from all danger is Superman's prime objective. And why ask why there are dragons in the city? Can you say Mister Mxyzptlk? Anything, and everything thing happens with that guy around.
This game also gives you the ability to save your progress at anytime. So there is no excuse and reason to start over from the very beginning of a chapter.
Overall the final product is astonishing; this is the BEST superman game ever made. Ever wanted to be the man of steel? This is your chance!