Originally posted by the DarkoneOdin helping to destroy galaxies is a very rare Odin. Certainly not an average Odin. On average, Odin is barely seen as a planet destroyer. You can't use a character's highest feats as a gauge of where another character is.
Pretty much, Odin destroys galaxies due to side affects of his battles, at best Onslaught is high trans as where SA Mangog was a legit sky father in power, Odin would vouch for that.
Otherwise I can say that WW, Jonn, BA, etc. can compare to many Earth weights of force since they can contend with someone who can has exerted more than 50 Earth weights of force. I can also say that the weakest character Glads punched can contend with planet destroying blows since Glads once destroyed a planet with his blows.
This is a con game you are using. You must look at the specific things Mangog has done. IMO, he's done absolutely nothing but show great durability. No power output at all.