Shigeo is a very talented Esper. He is easily one of the strongest psychics in all of media. I dare say that he could probably hold his own against quite a few of the S rank heroes in One Punch Man. He isn’t ready for someone like Garou though. Garou’s abilities go beyond that or monsters or even heroes. He is one of the deadliest characters in the whole franchise and he would be able to take any and all of Shigeo’s moves. His own attacks would hit incredibly hard and Shigeo would run out of power. Garou wins.