It literally is not and the manga contradicts that. SSG is weaker than Psykorochi (as she herself stated), who is leagues below the normal punches that Saitama hit Garou with later on. Serious Punch is incomparable to a Normal Punch, but when it comes to other techniques (SSG, Serious Side Hops), they can't be compared at all because they are different moves.
1- You can't prove that.
2- I didn't mention any Serious Punch in the sentence you responded to, but I'll assume you are talking about the SP that Saitama uses on Boros. I don't know why you jumped to the conclusion that the CSRC is massively weaker than the normal punches Saitama landed on Garou. There is literally no evidence of this, nor is there a scaling chain that remotely supports it.
3- The whole "Saitama grows stronger every day" thing has already been proven wrong multiple times. Firstly, he only grows, as stated by the narrator, when he experiments emotions. He also stated that he didn't feel anything anymore, and that he felt like he couldn't grow anymore. Secondly, the VGS is said to be unreliable at the end of the audiobook and even if it weren't, the digital version of Saitama that fought the real Saitama was a representation of Genos' energy measuring, so it was at most the Saitama who destroyed the meteor, which of course if a one shot level below the real Saitama.
Fisrt, I wasn't correcting your english, I was just correcting your understanding of what interviews are.
Second, I am not american, I'm spanish, but thank you. That means my english is improving.
I don't think you know what ortography is, because you didn't make any orthographic mistakes.
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