Marko Stunt wrestler 12 AEW matches in 2019 between May and December (1.5 matches per month). Shane McMahon 15 between January and October (1.5 matches per month). So in essence they wrestled the same number of TV matches. Yes Shane was in more featured bouts and storylines, but honestly the main issue people had with Shane was that he was winning when he should have lost. No one complained when he came back or during his first run with the company. As such it's a booking thing.
Marko Stunt is just completely unwatchable for me. I can watch Shane. Hence why I'd go Marko.