No, the main reason DC lost is because Jones could damage him but he couldn't damage Jones.
I called this even before the fight.
At HW DC has decent striking because he's faster than the HW's, at LHW his striking is diminished because he's fighting in a faster lighter div, now he's the slow striker.
So all that he's left with is his wrestling and as i said before the fight ...... that won't be enough to stop Jones, in the end he couldn't even wrestle him.
I'm 5'11 like DC and used to train at HW and MW (my natural weight), I can do a lot more damage at MW because I can punch much harder, I was a better grappler at HW but if I couldn't get someone down it seriously limited me.