Delve chest pulls archive

Yes but the lv 6 chest gave MORE shards AND other stuff besides. The lv 7 gave only shards. Are you saying each “drop” can be a good or crappy drop? In that case the lv7 gave me 7 crappy drops but the lv6 gave me 6 good drops. So a single drop of shards might contain 10-20 shards?