Sorry for hurting the feelings from both of you, but Dexter has great balance & flow (Arnold = only good chest, biceps, calves & clavicles) and he has a conditioning that makes Arnold look like a cheesecake.
On the other side, Arnold is a very successful and hardworking person with charisma, while Dex is a pretty insecure & cocky guy, though he made improvements.
It's cool brah, no feelings hurt,... fact is, IMHO,, Arnold > Dex in every way EXCEPT modern BB stage.
And since they're both retired, we're clearly not discussing on stage, soo.... Arnold > Dex.
My factopinion for the day.