User blog comment:Aay Bralor/Yang's Arm/@comment-26703798-20160216163958

Well I could be misjudging this but in the black trailer after Blake covers Adam while he "charges" he then slices an entire Spider tank in half before it fully fires at them, showing that he can likely increase his weapons strength which probably let him cut straight through Yang's aura depending on how long her "charged" it, also I believe there was a similar effect for both instances.