Lol this is the thing that sucks about the tier system the most Tiers of your rewards are not proportionate to the difficulty of the actvitiy. They are based on your level. When you are around 200, you simply do not get anything above tier 3, even from the hardest activities like the raid with feats and the lighthouse chest (aside from some one offs like the featured mythic mission). But once you increase in light level, you start getting all of your rewards at the associated tier, even from rudimentary, easy activities; when you are 450, you get 4 or 5 pieces of tier 5 gear from something as simple as a quickplay crucible game. It makes absolutely no sense.