Tenshinhan can't be that much higher than Piccolo Daimao, I think.
He even says he's surprised Goku was able to go so far above his power from 3 years ago and that Tenshinhan was fighting on-par with weighted Goku, as far as pure-power goes and he didn't speed-blitz weighted Goku either once he went all-out in speed. Goku was still able to block and such, you can say Tenshinhan wasn't going for the KO-blow just yet, but still.