Bruh you didn't even refute the main point about Chi Chi whooping Videl's ass her fight with Goku is all you need to see, she'd physically dominate Videl. Chi Chi's power level in the 23 tournament was 130, she was near base Roshi.
http://www.kanzenshuu.com/battle-power/databook/
Hercule won a tournament and he would not be a challenge to the fighters of old, if one, just one fighter showed up who was at the level of even Pamput then Herc would not be champ, the quality of the fighters went down, the announcner also laments how boring its gotten. You can even forget Hercule calling Spopo a creampuff, it doesn't matter, Hercule winning in and of itself is all you need to prove the decline. You think I'm saying Hercule is weak, he isn't by normal human standards, but that isn't saying much in the world DB.
Ox King took two hits that he didn't even feel, Hercule would have gotten floored by that Goku. Don't even try to downplay him tanking bullets as some gag not to be taken seriously, Goku was always consistent with that level of durability. It isn't the same where you see Hercule having a comedy scene(getting hit by Cell) in juxtaposition to the serious stuff, the DB stuff had a consistent tone and portrayal. Even if you really wanted to throw it away, him lifting and throwing a car, struggling or not is still way beyond Hercule, there's also Goku pushing the giant boulder, throwing giant logs, one shotting monsters, and jumping off mountains and surviving.