The return heavyweight bout between England and Wales lived up to its billing as the most thumping rugby match of the Six Nations. It was also the perfect result for both sides. England’s win brings the Grand Slam in sight, but Wales get to feel smug that they could have won if they had played on for a couple more minutes against an England team clutching at air with the bench emptied and the two leaders, Dylan Hartley and Chris Robshaw, withdrawn.