He said: “You’ve got to look at the back end of last year for the biggest indications. Warrington Wolves and Hull KR were right in the mix.”
Warrington finished four points behind the League Leaders’ Shield winners Wigan in third, while Hull KR came even closer, finishing two points behind in second.
The Wolves won their home elimination play-off against St Helens 23-22 in golden point extra-time before their season ended in a 10-8 defeat at Hull KR in the semi-finals.
The Robins, meanwhile, advanced to the Super League Grand Final at Old Trafford where they lost 9-2 to the Warriors who completed the Grand Slam.
Peet said: “I always think of St Helens as our closest competitors and I can see them coming back new and enthused with the changes they’ve made.
St Helens won four consecutive Super League Grand Finals between 2019 and 2022, including against Wigan in 2020, played behind closed doors due to COVID-19.
Like the Warriors last December, St Helens won the BBC Sports Team of the Year Award at the BBC Sports Personality of the Year ceremony in 2007.
They won the World Club Challenge, Challenge Cup and League Leaders’ Shield, but unlike Wigan, they comprehensively lost the Grand Final 33-6 to Leeds Rhinos.
Peet said: “Catalan Dragons and Leeds Rhinos are going to bring a load of determination.”
Catalan Dragons and Leeds will be hoping to make the play-offs after both just missing out last season, finishing seventh and eighth in the table.
Peet added: "When you’re all starting on the line, I think you can see an argument for a lot of teams to have big years.”
Correspondingly, on who will challenge Wigan this season, half-back Harry Smith said: “Anyone in the Super League because it’s a clean slate for everyone now.
“There are new signings and new coaches. You don’t know how teams are going to come out this season. Anyone can be a title contender.”