If you run the numbers, they actually do the correct amount of damage for their recharge timers.
Jab: ((2*0.16)+0.36)/(1+0.75*0/5-(0.011*0/6)*(360-0)/5)=0.68
Punch: ((4*0.16)+0.36)/1+0.75*0/5-(0.011*0/6)*(360-0)/5)=1
That's not to say they can't break the damage formula; there's already precedence for that in SS, as Footstomp already does more damage than it should. But if Punch and Jab are a problem, it would be simpler to move up their recharges to either 3 and 5 seconds (0.84 DS on Jab, 1.16 DS on Punch) or 4 and 6 seconds (1 DS on Jab, 1.32 DS on Punch).
For their recharge timers? Yes. For someone that supposedly has "super strength"? No.