@Hellos: An attack does not have to destroy a planet, for it to have planet destroying power. E.g. Saint Seiya
Considering I know next to nothing about Saint Seiya, better examples are found throughout fiction.
The problem is the Spirit Bomb hasn't done anything close, while the other examples coming to mind have shown the blasting power to destroy planets, yet control over said energy to hardly destroy a side walk with the same casaul blast.
As far as I know no matter how much energy puts in Spirit Bomb, it will never bust a planet.
@Hellos: Goku doesn't have to blow up the planet to use a planet-busting attack. And even what SSJ4 Goku lifted is still better than anything Super Skrull's ever done in terms of strength. So what if there's Nova or the bubbles? Super Skrull is not fast enough to use any of those before Goku blitzes him or uses a Warp Kamehameha (an attack that even Perfect Cell couldn't evade). If SSJ4 Goku decides to spam multi-planet busting energy blasts then the Skrull will be killed. The Skrull has abilities that can defeat Goku but there will be no time for him to access them when he's being blitzed or BFR'ed by a vastly faster opponent. ND
If it doesn't destroy the planet, then it isn't much of a planet buster.
Everytime someone actually charges up an attack with anything close to that kind of power the entire cast has a panic attack for a reason.
I didn't say it wasn't, just that saying he lifted a city seems like an incredible exaggeration of his one good lifting feat in his entire career.
Goku would never spam multi planet busting attacks, he hardly ever charges one up period. That and Goku isn't intelligent enough to implement BFR.
If Goku wins for anything it's going to be due to speed to avoid Superskrull from actually able to fight back.