As Wade said, both men were down for more than a 10 count, which would have resulted in a no contest anyway.
And as TTC said, neither man got to their feet on their own accord. Cena didn't get to his feet at all, and Ryback only got to his feet with the aid of 2 men. So again, neither man would have beaten the 10 count had there been one.
It's a no contest and there will be a rematch at Payback no doubt.