The hosts retained the RBS 6 Nations crown courtesy of their emphatic win in Cardiff.
"We got in at half-time and thought we were going okay, although we didn't have the execution right, or dominate the breakdown - and set-pieces were a problem," Lancaster told BBC1. "But the first quarter of the second half wasn't good enough and Wales thoroughly deserved the win, no complaints."
He added: "Wales played well and we didn't turn up and match their physicality.
"It's a simple game and their physicality was better than ours."
- Sports & Recreation