St Helens coach Daniel Anderson says Wigan hooker Terry Newton should have been banned for more than 10 games.
Newton was handed the record suspension for breaking Sean Long's cheekbone and knocking out Lee Gilmour in an engage Super League game last weekend.
Wigan have said they may appeal against Tuesday's disciplinary ruling.
But Anderson, who will be without Long for the rest of the season, feels the ban is not long enough, saying "I don't think it's a strong enough statement."
Newton was found guilty of using his forearm on Gilmour and of using his forearm and elbow on Long.
Wigan have accepted the three-match ban for the offence against Gilmour, but they may challenge the Long penalty, with coach Ian Millward saying "there is some doubt in it".
The Warriors coach said: "I thought the three-match ban was vindicated. Terry pleaded guilty and feels bad about it. He said he got it wrong and he even apologised to me."
As for the Long challenge, Millward added: "Terry didn't mean to do it and he is very upset about it.
"The club are considering what action they will take next regarding the seven. That is something our chairman Maurice Lindsay is dealing with and is talking to Terry about.
"Obviously you don't like to see that sort of injury and a player's season finished. I think the next 48 hours will determine our actions."
Long will undergo surgery to repair his cheekbone and a damaged eye socket on Wednesday.