User blog comment:Starling starwing/The 5 year gap/@comment-3969416-20120430025242/@comment-4454131-20120430031924

I agree. He seems most likely though I still don't know how the reason would play out. For all we know it could be the real Roy as arsenal under the light's influence and Kaldur hasn't been around for other reasons. That last one is my second guess.