Master Roshi vs SSJ Goten

Now that Super proved once and for all that skill can beat power, as both Roshi and Goku in his last fight proved (They outright said Goku's base < SSJ2, yet Goku was competitive.)

Who wins?

Not sure you are correct here.

This video explains it well.
YouTube video

Not his best argument. He cherry picks that everyone claims Califila improves as the fight goes on, but ignores that everyone, including a God of Destruction, is claiming SSJ2 is > base Goku, and that being stronger against him simply isn't good enough.

The "training" argument would only add up if Goku was losing. Califila hasn't really shown the capacity or will to hold back, and if she was serious about pulling her punch's, she never would have accepted Kale into the fray in an effort to overwhelm him.

He's also forgetting this is nothing new for Goku. Form four Freeza was much, much stronger, yet was struggling in straight melee (Restricting his arms, yes, but it proves Goku's just that good.)

Another thing.

Trunks proved the "base god ki" thing is a myth, or forgotten about.

If not by his spar with Goku (Who could have been holding back), then by his holding off of Zamasu as a team effort, and individually.