From: FireflyV_ONE | #020http://media.comicvine.com/uploads/6/68737/2742538-supersneezeae9.jpg
If you look closely, those planets look really small...
The way it is shown (at least from that perspective) those planets cant be more than a foot in diameter.
It is possible he destroyed planets, but a few things:
We don't know how big they were.
Why would such a small mouth breathe a fan of air like that?
No life on it, according to Superman. So no one powerful or notable were on them.(i.e Darkseid, Saiyans)
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On a quest to get one thread stickied :A:
sticky req plz