Who knows, maybe in their universe Toppo is the strongest that rivals Gods power that's why he is a candidate to become the next God Destruction and seing a low ranking universe having a Godly power may impress them but it doesn't say that Goku is more powerful that Toppo don't you think?
This is a cool debate pero maaaan this is Dragon Ball were talking where continuity is really messed up, remember Frieza's power ranking? It is lately revealed that lazy frieza lang yung nakalaban ni Goku back then and the returning Frieza trained for 6 month to achieve a Golden Freiza form. Funny how Toriyama added that story detail just like that and we swallowed it because It's Dragonball XD