I've thought about this match a bit and am pretty convinced as to what happened.
Dizzy continually beamed his marines on board my ship, I knew this so was keeping an eye on the number of marines I had left on my ship knowing that if they got to low I'd have to disengage.
So while Dizzy may have seen 14 of his marines on my ship I had no way to know that and could only rely on my own number as an indicator of where I stood.
While Dizzy was watching his number of marines fight mine and my marine numbers were dropping, I noticed that he had 0 marines left on his own ship meaning that he'd beamed all of his marines that weren't killed from damage to his ship over to my ship. At that point he was watching the marines fight it out with no way of knowing that I had just beamed over marines to his ship. Which is when that match promptly ended because of lack of marines on his ship. DH mentioned something about the security stations most likely being damaged as well which would have contributed to the quick capture.
I've watched the film from both prospectives and IMO everything seemed OK in the match.