Literally DBZ characters have shat on planet destruction since Vegeta showed up. Saying 'planet destruction' now is almost a joke and considered PURE IGNORANCE. Just because it can blow up the planet doesn't mean it can't blow up much more.
Take for example the planet buster Vegeta vs. Frieza when Frieza kicked it out of orbit. Some people like to say that he kicked it out before the blast exploded, making frieza non planetary. HAH! WHAT FOOLS!
There are several reasons why this is disproven:
1. Android 16 to Android 18 when Cell was blowing up islands: "Don't worry, 18. Cell will control the blast to where they won't kill you."
DBZ characters have the ability to destroy environments around them yet saving enough power not to destroy their perceived target.
2. Frieza tanked Namek explosion.
3. If it was so easy for Frieza to kick the blast out of orbit, how come the Z warriors didn't try that when Cell shot his Kamehameha, hmm??? Simply because the energy inside of the blast is planetary. DBZ tanks them.
4. Cell's Solar System Kamehameha wasn't as BIG as the solar system, yet had the power to destroy it. The energy contained inside of the blast is massive.
So in conclusion, far exceeding planetary or multiplanetary for that matter. HAH!