Fantastische Hure said:
And where is that rule stated? I mean the last sentence. Just because you make up rules about some 70%, doesn't mean it's real. Goku was just thought to be Cell's greatest challenge out of all them. No-one else was high enough to him, so he just went with the one with the highest-power. There's also his Red-Ribbon-Army vendetta, so it doesn't really matter. Freeza considered Nail strong, yet you know how many times higher he was than him.
Then again, what I'm saying was how come Goku will be value as a fun opponent if he was like 30% of Cell's power? That doesn't make sense at all, to be consider as a fun opponent, you need to pass 50% of his power to be consider as worthy of oppoenent otherwise it's a joke.
And as for Freeza/Nail comparison, It's just Freeza being surprised to see a Namekian strong enough to rival the members of Ginyu Force who are perhaps top 10 stronger fighters at that time.