"Totti is an excellent goal scorer and a team player, but I think I'm stronger and faster in the final 20 metres," he told journalists.
"We need to be realistic and be ready for Roma to play great football.
"They send five or six men forward and any one of them can score. It will be a great game to watch.
"It would be great to win on Wednesday and become leaders, but at this stage of the season that isn't what really counts.
"I hope we keep growing as a side and can also keep picking up the points away from home.
"We are still a young team and we need to mature whereas Roma are genuine title contenders."