Just a few changes you may want to make to the back cover.
1. Double space between first and second paragraph like it is between second and third paragraphs.
2. Lose the additional "e" in Dexter's Lab.
3. It's Padme, not Padem, in the final paragraph.
4. I would put a comma between "Continue" and "the Clone Wars do" at the top.
5. Was it really 2.35:1? I thought it was 1.85:1. Maybe I'm mistaken.
6. I would suggest breaking up the paragraphs as such... #1 stays the same, #2 starts as is and ends with the first sentence from the final paragraph (ends in "led by the Jedi."), #3 would be the rest. Where you have it starting "It is a war fought..." is an entirely different thought that should be separated from the sentence before it. Whereas the two sentences describing each army are so similar in nature that they should be grouped together. Heck, those two sentences could constitute their own paragraph.
Yes, I am a proofreader by trade. Sorry. I'm really bad like that. I even proofread a wedding program while sitting at the wedding. My wife just rolls her eyes.