How strong is Mezo Shoji? According to the official character book, Shoji has a power of "5/5". I don't know what exactly the power means for all character? But for a character who doesn't have any emitter ability, I guess it has to be related to strength, yet Shoji as far as I remember is never shown to be as strong as many other characters. Other character like Rikido Sato, who can increase his strength to five times and can destroy walls with it, it's rated  "4/5". My question is, does Shoji have some level of superhuman strength or what power he has that justify his "5/5" rating of power in the official character book?
Right taking into account what Merlyn said aka that shouji in grip strength measures 540 kgs. Just to give  you a reminder, the force that is needed to crush a human skull is 235 kg, so Shouji could potentially break all the bones in your body with relative ease, so yes he absolutely deserves the 5/5 scoring in power.