Granted, you should receive objective points for scoring. After all it is your objective to outscore the opposing team. But, if all you did was run to the opposing teams side and received the ball to score and at the same time provided no backup CC, protection or healing you can't expect to be called the MVP. as the other person replied, would you have scored if it weren't for the TEAM effort getting to you in the process. What good are you just standing there waiting to get the ball. I am not accusing you of doing it but i have seen it on a number of occasions, especially from assassins who 'cloak up', skulk to the score zone and stand there doing next to nothing and expecting everyone to get the ball to them. With that tactic you might as well play one man down.
To answer the statement about not being a good player even though you won a large number of medals. Yes, this is true and i wasn't saying otherwise. But it is a reasonble indicator to show the players activity and effort at performing a role.
Take a 2 juggernauts for instance. Both are rage spec.
Player 1: runs as or with the ball carrier. Is in soresu form in order to put guard up on carrier or healer. Reduces regular damage by keeping scream up and uses taunt to keep damage down and in turn helps the team to win. Chances are this person will come away with say 9 medals. Performs a team role yet gets no MVP.
Player 2 (on same team): Does none of the above. Chases kills and get kited and killed. Comes away with 3-4 medals. Gets an MVP.
I am not saying this only happens to juggs. This is just an example. But this is what i am talking about. Whats the point in working as a team if the team doesn't recognise your contribution.