Let me say something here...
F230 does not become dominant in meta games where Attack is used heavily. It could definitely still be used to extreme effect, but is definitely possible to counter with a competitive Attack type... IF the user is not launching stationary. It the user launches F230 so that its movement pattern in relatively concentrated ( which can be done by launching it at a steep angle or launching low the ground slightly weaker than usual), then KOing it is much more difficult. It is definitely possible, though.
Also, if one is using F230, there are only select Attack types that work well against it. MSF-M Bahamdia Dragooon BD145LRF is very effective, but Flash, for instance, is much harder to achieve a win with. Wyvsng is usually decent, but far from the most effective. Balro is pretty darn good.
Again, a straight stall is the worst thing you could do against an attack type with F230. Banking, launching stationary or using techniques that keep you out of the line of fire work much more effectively. If the F230 user mixes up these techniques and switches up his launch, it can become frustratingly difficult to take it down, especially as using Attack in tournaments is much more difficult than testing and a risk that most people aren't willing to take.
Overall, I wouldn't say that F230 is utterly broken in Standard format (as you can also beat it with same-spin B : D, which is a very nice option to have), but it is definitely unhealthy for the meta if you ask me. F230 in Standard is one of those things that should be watched closely, and used sparingly, as it can do significant damage to any given meta game if it is abused. I think tournaments without F230 are altogether far more skill-oriented and enjoyable than tournaments with bladers using it.
Zero-G is a completely different story, though. There it's sickeningly overpowered and an utter abomination to the game itself. I would give everything I had to see F230CF/GCF outright banned inZero-G. XD