"This squad can take Cardiff City to the Premier League, we all believe that," he told the Echo.
"I loved it out there. The performance was great and we created a lot of chances.
"I have never played for a team who have had such an unbelievable run - one defeat in 15 matches.
"We prepare thoroughly for every match and we can go to the Premier League. Without a doubt."
Johnson has gained cult status. He was poor when he first came and lack of action meant he only ever got bit parts. The crowd have warmed to him though and showed amazing support for him last night.
"It's been a difficult time since I came here, but the goals will come," believes the American international.