Vegeta wins. Blue Goku at the beginning of the Granolah Arc was able to fight against Granolah's clone who was serious since he was powered up with an aura. Goku and Vegeta believed Granolah was the strongest of the universe and had no suspicions of Granolah when Goku fought his clone. It's only...
This is a fair point.
I think Toriyama definitely wanted Dabura to be comparable to Cell but either changed his mind or didn't think it was that big of a deal when he decided to have Gohan fight him as a Super Saiyan. I don't ever think the intention was to compare him to a Suppressed Cell...
Gravity feats aren't consistent across characters. Android Saga Gohan was in the millions yet struggled in 10x gravity. Aside from that, Android 18 called Base Mighty Mask strong so that should be the end of that.
It's a straightforward assessment using information we already know. The statement is made for the reader, not Piccolo. As @Kyo said, the reasonable reader wouldn't be assigning both weighted and unweighted values and just take it at face value.
Your interpretation of in-universe logic doesn't...
That's the point. It doesn't matter to the reader since the statement is given with the knowledge that the readers are aware of Piccolo's weighted clothing. I don't see the issue regardless but I also don't see the issue with Unweighted Piccolo being slightly above First Form Frieza.
So he can't make a logical guess? It's a statement provided by the author giving us an idea of strictly how powerful Kamiccolo would be. It's just a straightforward assessment for the reader.