Johnson believes the Reds have proved they can cope without their Uruguayan striker.
"Any team is going to miss Luis Suarez," he said. "But we have players here who can step in and do a job. The players and the staff have never thought that we are a one-man team.
"We play the way we play, with or without Luis. I thought Jonjo did fantastically well on Sunday. He got into a few good positions, and grew into the role.
"I think at the start it was a bit unusual for him, but he found his feet and I thought he did very well."