Finally, somebody has come along who can answer this pressing question (via io9), Adam Elkus, a foreign and strategic analyst. Elkus takes a look specifically at the Mobile Suit Gundam franchise for his answers and his conclusions are interesting. One of the things that struck me is how the author points out that despite possessing extremely advanced technology most engagements, naval or suit-to-suit, are handled in very classical ways, usually taking place within line of sight. He also mentions that the engagements in Gundam are a logical extension of Major-General J.F.C. Fuller's then-laughed-at theories in the early 20th century that state a small, fast-moving, efficient squad can decapitate an enemy's leadership, causing panic and collapse along a front.
It's a little bit of a long read, but well worth the time if you've got a little bit of military otaku in ya.