How strong was Krillin by the end of DBZ?
People usually are more impressed by Goku and Vegeta. They are Always the ones talked about 24/24.
But what if we give some Time, to talk about the strongest human in DBZ? Without any special power or science upgrade, Krillin still managed to achieve a very impressive power level.
Krillin and any Z warriors are far stronger than Torture Genial someone who has the power to destroy the Moon and around 200 points in power.
Krillin in the Saiyan Saga was stronger than Raditz who could fight both Goku and Piccolo easily before they trick him. Kirlin was almost able to decapitate Napa with his destructor disk without Vegeta's warning to avoid it.
In the Namek Saga After having his power released by the Namek Elder, he grew even stronger. Almost as Strong as Vegeta when he first Come on earth with a different power being 3000 when Krillin's own was 14.000
Krillin also valiantly fought Krizear with Vegeta and Gohan's Help. He even Comes UP with a good strategy to Save them many times in the Namek Saga before Goku's arrival.
After Namek Saga and the 3 Years of training, KRILLIN 's power level skyrocketed to be almost as great as base Frazer's power level.
Same base Freezer who destroyed effortlessly the Vegito planet along an entire army and Kakarrot's father.
This means post-Namek Saga Krillin Can also definitely destroy a planet effortlessly. This also is the case for Tien, Chiaotzu, and even Yamcha who were also 100 times stronger than in Saiyan Saga.
Krillin could beat the commandant Guillou altogether who were all too strong for even Vegeta back in Namek Saga.
So by the end of DBZ, Krillin was planet+ level. If he was in another story like Naruto or even DBZ, Krillin would have been a God. Hell, even his beginning DBZ self might be sufficient. Krillin could even Beat Saitama.
Honestly, I think Saitama is overrated, he scalls at best to Moon level whereas even Rochi in DB scale to that.
I doubt Saitama Can Beat even Saiyan Saga Goku as feats stand while Krillin is far stronger.