I'm not sure where to go with this, but I received a legendary chest engram from crucible and it turned out to be the exotic chest piece Heart of the Praxic Fire. I was overjoyed of course, until i realized that the stats were worse, even when maxed, than my current legendary chest. The Praxic Fire Rahool gave me has a max of 439 defence and 30 light (maxed out), whereas my legendary gives 463 defense and 33 light. Is this normal, or a really unfortunate bug?