the chest piece for the hunters that xur is selling s the Crest of Alpha Lupi and i was thinking about getting it. but i currently have a legendary chest piece called the Astrolord Vest thqat has +23 light and the Alpha Lupi has +21. My question is, if i buy the exotic Alpha Lupi with the +21 would it be better that the legendary Astrolord Vest with the +23? im just wondering why the exotic has less light than a legendary. I just want the one that will give me the most light, because i would like to go up a level. Thanks to anyone who helps :)