Some food for thought. Given what happened in ep. 43 I'm again inclined to believe that Piccolo is still essentially the same, or at most very marginally stronger. At the very least, he most definitely is not intended to be stronger than regular Base Goku nor God tier.
12:36 | Goku: "Goin' a whole day without trainin' just don't seem right."
12:42 | Piccolo: "How do you feel?"
12:44 | Goku: "Well... If I fought you right now, I'd probably lose."
12:49 | Piccolo: "I see."
That's a Goku who can't control ki, can barely fly, has no appetite and so on. Transforming into a Super Saiyan definitely looks like a no-no.
This leads me to conclude that Piccolo is much more similar in power to the "Ki Disorder/ Almost Totally Useless" Base Goku than regular Base Goku; the whole exchange has Goku acting like Piccolo beating him in Base would be something that normally wasn't supposed to happen (I mean, if base Goku was in fact weaker than Piccolo what would be the point of mentioning something that would happen already in regular circumstances?). It almost feels like he can give Piccolo an idea of his weakened condition by comparison to Piccolo's regular power output.
Furthermore, the fact that he adds a "probably" instead of a "certainly" means ironically that Goku thinks he still has kinda of a chance (like 20% or 30%, I guess) to beat regular Piccolo in his pitiful state. And in my opinion that tidbit speaks
volumes, since he could have, like, 10% of his regular ki with no ki attacks available.
If you want to get kind of anal, according to Goku, the gap between himself with the ki disorder and Piccolo ("probably wouldn't win") would need to be smaller than the one between Piccolo and "tired" Final Form Frost ("has no chance to win").