Well first off this is a crucible match. The gear it gives is completely random because it's not the best gear in the game. The reason there is no trading is because if you do a vault run and a peace of raid gear drops then you wouldn't want someone who didn't complete the run to have it. I'm extremely proud that I competed the vault because I know that not everyone has/can. So you do earn your rewards, stop searching for it in the crucible though.