Johnson insists Liverpool have a first-choice XI which is a match for any of their bigger-spending rivals.
"We take each game as it comes but if we can go to White Hart Lane and perform like we did there (winning 5-0) is no reason why we can't win these games," he said.
"In terms of the starting XI I think we can compete. It is just getting it right on the day and everyone performing to the best we can.
"If we can do that we can cause anyone problems, it doesn't matter how much money they spend."