Oh true, it's just that to me, Dean's a complete and utter sub.
I can't imagine him ever wanting to dominate anyone in bed. It's not that he won't top, if that's what his partner wants of him. But I just can't imagine him wanting to be in charge in bed. Mostly because he already carries so much responsibility in his regular life.

For me, when I see Dean, I see someone who wants to please and wants to be told he's a good boy. He can be pushy, demanding, but never dominating. And I guess that continues on in how I see Jensen.