It's hard to say. First thought is this is 100% Dwayne, but with Haitch's long-term booking, you never know. Remember Scott came out blunted up with Jey on the Netflix premiere.
I would imagine Scott is to Cena what Rodman was to Hogan.
Scott is definitely with The Rock. Rock said he wants to get in the ring and that he will eventually. I can't remember which part Rock didn't take credit for. It might've been Cena turning.