From the looks of it, OP lost because essentially they built no type of resistance/armor while the enemy team had some type of mitigation, be it HP, Armor, etc.
Not to mention, if reading it correctly, with the number of neutralizations and captures everybody had, nobody defended what they had but insisted on going for grabbing extra captures i.e. overextending where not needing to.
So as a Twitch you did not lose the game per se, rather everybody wanted to kill and nobody wanted to defend, leaving whatever tactic you were using (even if the right one) useless.
Also, anybody complaining about kills being stolen in Dominion needs to seriously go back to Summoner's Rift. Killing is good, whoever kills someone it means the enemy team has one less person to defend with, but it's not the point of Dominion (you can seriously net more gold killing 3 minions faster than killing one champ). That Corki and Vladmir does not understand the concept of team playing or Dominion from the looks of it.