They're heading right for us! Run!
Skywarp wouldnt call himself a coward. He'd call himself smart. So what if he runs away from combat? Fighting is dangerous! All those missiles and lasers could really hurt someone! As a clone of Starscream, he's got all the power in and skill of the leader of the Decepticon air forces, but none of the courage or ambition. He could easily be one of the most dangerous Decepticons of all time, but since he screams and runs away the second a shot is fired, he's mostly just a joke.
Remarks: Skywarp is a repaint of Animated Starscream, so look for the full review there. Just a few words on the differences here. It's pretty much a given in the Transformers franchise that everytime there's a Starscream, he gets repainted into Skywarp and/or Thundercracker, as well as the occassional Dirge, Ramjet, and Thrust. Animated Skywarp comes in his traditional black and purple colors and looks pretty good wearing them. There is very little to complain about in terms of looks and the figure as such and the figure itself is still solid without any real faults except that the joints would rather come off than bend at times.
That said, Skywarp is just a repaint, nothing more. They could have remolded his face, at least, given that Skywarp is the coward clone, so Starscream's cocky grin seems misplaced. A scared expression would have fit him better. So at the end of the day Skywarp is a good, solid figure, but little more than that.