However, Marler is confident that England can earn their first win of the tournament at Murrayfield this weekend.
"We showed a lot of character coming back from that poor start we had [against France], and there's a lot of character in this team to come back next week and put things right against Scotland," he told Sky Sports News.
"We know it won't be easy, conditions probably won't be good - there's a lot of chat about the pitch from the media saying it's not very good, stuff like that.
"But, you know, [the conditions are] both the same for both teams and they've got some quality players in their team so it'll be a tough day."
England head to Murrayfield with four wins from their last four games against the Scots.