Again base sailor moon beat Galixia who blew up planets with her fingers (Not like Frieza who charges up or anything, or Vegeta who even used energy.) She simply pointed and blew them up, travel the galaxy in no time at all as well as causing a chain reaction, destroying the galaxy, Sailor moon beat her. Not to mention surving the moon planet's destruction, and this was still all before Eternal Sailor moon in which she can stop time, and is stronger, faster ect and lets not forget ETERNAL. I mean there is no proof DBZ characters can take planet busting attacks other than Vegeta tanking the planets busting attack from goku (Which was because he was still vastly stronger than Goku at that point and he had his tail, if goku had been the one hit he along with earth would have been destroyed.)
Now you could argue cell's kamehameha could destroy a solar system but Why what Cell said about blowing up the solar system was a lie he’s not over frieza and since this forum goes by feat maybe you’d like to tell me how android 17 & 18 were able to kill off all the Z fighters which are planet busters
There are zero feats of them destroying a planet yet they can kill all planet buster Z fighters yet fan find it hard to believe that Eternal Sailor moon who contrals time and is eternal can can kill Goku by himself. I mean Freiza towards the end with his fight with Goku said he was gonna destroy the planet along with Goku, but Freiza was only able to destroy the core which surprised both of them, so far the highest amount of destructive power they have is a galaxy buster being Buu and broly and it was never even shown how they did it. So anyway we don't know if Cell was bluffin or not.
Now you can argue that Goku does indeed start out in SSJ3 but even with that he is still a multi planet to Galaxy buster yet his durability is yet to be seen, as far as I have seen this is just like the Kami tenchi thread where people say he is not omnipotent since he has not shown feats yet goku and a bunch of other dbz xhars are planets busters becasue of power level and speculation, despite the fact that Yamcha who should be moon busting at this point was killed by a saibamen who's self destruct put only a small crater in the ground? That was grenade level at best. Andyway wether goku is planet,galazy,solar system or universe busting, that is irrelivent as Sailor moon can control time and is immortal, she simply stops time and blows him up, or use one of her many sailor magic skills.