I think you might be confusing the 320 strike playlist, with the 350 light heroic playlist. Some of the 320 strikes will give good blues from the boss, while all of the heroic strikes give two blues above your light level (up to 365 only).
The chest is only really for a chance at one of the strike specific loot items, of which each strike has its own list of possible items. There's also a chance for a blue artifact, that should be above your light level.
English
-
Okay thanks :)