What makes me question if it's really him or not (and not just someone seeking to do a tribute to his style) is - all of their smiles seem off. Like... they're all SUPER smiling... except Northstar, who looks like he's smirking... and that doesn't seem like Byrne... and then the one thing that REALLY makes me question if it's really him is Snowbird's cape - the person drew it as feathers - which Byrne (to my knowledge) has never done - it's normally just a "several pointed tip" cape.