Going back to the Goku expected FP vs Shen discussion, I don't think those quotes necessarily imply anything beyond Shen >> unweighted Goku (vs Tenshinhan). The earthlings are all nervous, anxious, sweatting bullets and pinning their hopes on Goku, which wouldn't be the case if the level Piccolo and Shen fought at weren't considerably above the level Goku used to tool Tenshinhan, since were that the case they'd all know Goku had the power to deal with Piccolo since Tenshinhan earlier pinpointed how the level Goku used to deal with him wasn't anywhere close to his full power. They wouldn't have that much of an anxious demeanor and see Piccolo as a threat to the World if it weren't considerably above unweighted Goku (vs Tenshinhan). If that weren't the case, someone like Tenshinhan would quickly point out how Goku has the power to deal with such threat, much like he calmly pointed out to Kaio (wrongly though, but that's besides the point) that they shouldn't worrry since Goku can raise his level up to 10x.
But still, Tenshinhan wasn't considering Goku as one of the ones who wouldn't stand a chance if they ganged up on Piccolo, as Yamcha pines his hope on Goku in the next statement, showing the earthlings were just talking about their uselessness, not Goku's.
I also think that Ten's anxious demeanor only showing up after Piccolo showed more of his powers against Shen implies the level Piccolo used to deal with Kuririn isn't above Tenshinhan's powers either, as this latter believed himself to be at a level capable of defeating Son Goku and if Piccolo's showcased level vs Kuririn were already at a level that should soundly outclass Tenshinhan, he should have been already kind of showing this cautious demeanor about the situation, which didn't seem to come to the surface until Piccolo fought Shen and left go more of his hidden reserves.
Kuririn : 80
Piccolo (vs Kuririn) : 96
Tenshinhan/weighted Goku : 110
Unweighted Goku (vs Tenshinhan) : 160
Shen/Kami : 270
Piccolo (vs Shen) : 300
Piccolo/Goku (full power) : 600
Those battle powers seem to fit the whole events of the Tournament, I believe.