Well I agree with you when you said the Ewoks mostly 'distracted' the Imperials....I mean you can't get more distracted than being killed?? They had also taken down AT-STs before Chewie had borrowed his so for you to say they wouldn't have taken out the others is confusing to me? The Empire hadn't just turned up on Endor so the Ewoks had plenty of time to establish a lot of traps, especially seeing the AT-STs had a very limited place to walk it wouldn't have been hard to ambush them. Had the Ewoks not shown the Rebels the back door the battle would have been over before it began....this act can't just be flipped off as a non-event. Han would never have had the chance to out smart the Imperials in the first place if it wasn't for those furry little buggers.