jim1 - you might like to double check the link you attached. I see Eric Ebron and he definitely isn't lumbering. But he does appear 70 lbs lighter and may not have the arm length to block like Cyrus Kouandjio;-) Actually, I enjoyed the Ebron video, he moves well and it was a good check to see if we cared to take the time to check your video.
I still don't see Kouandjio as the right fit for our ZBS but I'm ready to be flame grilled on that because Rich Eisen, Charley Casserley, Todd McShay and Peter King have all picked him in for the Dolphins in their latest mock drafts. I feel like the mother who is watching her son marching with the other soldiers, remark that they're all out of step except Johnny.
I did watch the Ebron combine video and the Sports Science piece, he's one heck of an athlete.