Sam Burgess is so good that despite having limited experience in Union and even more limited as a centre he completely eclipsed Jamie Roberts and shut him out of the game. On the other hand Roberts struggled to contain Burgess and needed assistance by way of Wales adjusting their defensive structure to put 2 players on Burgess.
This is the much lauded Jamie Roberts, one of the best centres in World Rugby Union, veteran of almost 150 Top Tier Club games, 72 Test matches for Wales, 1 Barbarians appearance and 3 X a Lions Rep. COMPLETELY SHUT OUT BY BURGESS!
England were twice 10 points up and still 7 points ahead when Burgess left the field, only morons and bigoted idiots with an agenda would blame Burgess for that loss.