p123 said:
All of that to come to the wrong conclusion. As I said, Piccolo wouldn't say boo to Vegeta should he be weaker than Vegeta was on Namek. Don't forget Goku's comment suggesting that it was either Piccolo or Vegeta who defeated Freeza. Piccolo's stock has risen, he's given a lot of screen time in this short saga and the next saga suggest that his potential is far greater than that of a Base Saiyan. If Piccolo is now capable of running on par with the Super Saiyans, why the fuck would he be only progressing as fast as a Base Saiyan back then? It's the same Piccolo, without the Super Saiyan sparring partner and Death is Coming incentive.
Super Saiyans >= Piccolo >>>> Base Saiyans, in terms of potential and progression. Which is why Piccolo should have zoomed up right behind Vegeta in that short saga.
Now, overall, his disposition, I agree with you. I think your points suggest that Piccolo perhaps is somewhere in the 80-85% range rather than any closer. Perhaps the same gap as had in the Androids Saga is appropriate here since Vegeta is so un-bothered.
But overall, the proper chain would be...
Vegeta > Piccolo >> Vegeta Namek.
Well, everyone is entitled to their opinion. I shouldn't bother addressing the "Piccolo wouldn't say boo to Vegeta" because that's pretty much you repeating what you have said whereas my entire post was focused on that.
As for Piccolo's growth rate, I agree with you, but I am still generally adamant on assigning a huge increase to him there due to the absence of strong evidence surrounding him surpassing or matching the base Saiyajins there, with him challenging base Vegeta coming more from a Piccolo who is still proud and won't simply let Vegeta talk shit than from one who thinks he is there power wise imo. Vegeta doesn't seem bothered with Piccolo's challenge either, and we see how Vegeta does generally look when the challenge is coming from an opponent with superior power.
Whilst you could force an In-Universe explanation into this huge increase from Piccolo, it's worth noting that training with a SSJ has also benefited a lot, plus there's always a bit of plot surrounding those huge ass jumps in powers. Similarly, we saw that Beginning of Z Piccolo wasn't that different from his 23rd Budokai self training for 5 years, yet one year and some portion of it being spent on teaching Gohan the basics wielded huge gains, with Piccolo going from the 400 range to the 2,000 range, multiplying his power by 5. Heck, going by your battle powers, in which Piccolo in the Mecha Freeza saga had a BP of 7,000,000 and his androids saga a battle power of 1,000,000,000, we can conclude that his increase in the Saiyajins saga was proportionally more or less the same as the one he received when training for the androids, as according to your numbers Piccolo would have received less than a 6x increase a year.
Piccolo (beginning of Z) : 408
Piccolo (Saiyajins saga) : 2,100
--> increase : ~5.1x a year
Piccolo (trunks saga) : 7,000,000
Piccolo (androids saga) : 1,000,000,000
--> increase : ~5.1x a year
So proportionally, androids saga Piccolo's increase might have not been even bigger than the one he received in the androids saga. So I think plot definitely adds in justifying why Piccolo got that strong in the androids saga, just like the plot made his gains training for the Saiyajins more significant than the ones he received training for 5 years, and we know part of the 6 months were spent on him shaping Gohan into a warrior.