Additional Matchmaking Information (not from original FAQ):
If a player has never played Ranked before, Quick Play games will affect their MMR. Because of this, two new Ranked players can play all their placement matches together and place in a different rank. (Source: EvilMojoPotzer
There is no matchmaking on Test Maps. (Source: EvilMojoPotzer)
You stated that you used the objective time to measure the contesting time of the point.
I responded saying that objective time is not an acurrate repesentation of point contesting time in general, siting various reasons how objective time is gained.
I gave another statement about the various bugs that can happen with the point fight that can make players not register when they are in the general location of the point or paylaod, but it sounds like that has not even been taken into consideration.
Still I am asking what map did this happen on, as this sounds similar to the common marauders port map problem.