I assume he is alluding to Nappa, Piccolo, Tien, Krillen, Roshi, and Chiaotzu(unless you count the single hair on his head). Or he just got done watching Bald this Way so he is pretty psyched about that.
I don't think Goku admits outside of facing Fat Buu that he was holding back power. When he fought Vegeta(first time) he was going at it fully power, when he fought Cell he admitted beforehand Cell was stronger, and then when he handed it to Gohan he though Goku wasn't giving it his all(which I guess that could be debatable but he said he was). Seems more like Frieza if anyone that does that. Sounds more like something Younger Toguro from Yu Yu Hakusho would do. And yes I agree the powering up is kind of ridiculous. And the battles sway to build dramatic effective and prolong the battle. Which I guess that wanted to have more episodes for whatever reason(which they went away from when they made Kai).
That being said are we talking about the anime vs. anime or the franchises as a whole? Because like with the whole franchises the animes are completely different genres geared toward completely different audiences. A more feasible comparison would be with Digimon or Yu-Gi-Oh.