Like any sane Smogonite, I love X-Act for the magic he does with stats, and I'm almost allergic to disagreeing with Chou Toshio. But I have to take a seriously hardline stance against them in defining what an Uber is. Smogon is not a catch-all forum for people who want to play pokemon; it is a competitive forum with a definite philosophy and goals. In the Smogon philsophy, there is a vague, limited definition of "Uber". It is not nearly detailed enough to give us a clear sense of what is and isn't Uber, but it
does give us a sense for what can qualify to be Uber. And that definition looks nothing like:
Here's the best definition of an uber:
Something is uber (or BL for the underused metagame) if the general community does not want it to be in that metagame.
In fact, X-Acts definition is almost entirely opposed to the definition found in the Smogon philosophy. As a reminder, that definition is:
Smogon attempts to avoid bans as much as possible—only when it becomes very apparent that a Pokémon is far too powerful to be in line with a balanced metagame is it banished permanently from the standard arena.
That, of course, is a much different statement than saying that an Uber is "anything the general community does not want in that metagame". Smogon is not Shoddy Battle. We have no responsibility to provide the most fun metagame possible in the eyes of the most users. It's not in our philosophy. We ARE responsible to provide the most competitive metagame possible, while banning only the pokemon that are "far too powerful to be in line with a balanced metagame". I despair of ever finding a mathematical formula to determine whether something is "Uber", if only because of the example of Wobbuffet, which is clearly far too powerful, but against which just about any formula would fail. As a result, I think it likely that community consensus is the most logical way to judge whether a pokemon is "far too powerful". However, the consensus itself is not the sole basis for the ban, and it should not be so arbitrary as "whatever the community does not want".
In summary, I agree with the Smogon philosophy, against X-Act's definition, that a pokemon should be banned only if it is clearly and demonstrably too powerful for a balanced metagame. I understand a balanced metagame to be one in which you do not need to take unusual and extraordinary means to counter one or two specific threats (like using Skill Link Cloyster to guard against Garchomp). If, however, the community can ban whatever they feel is undesirable, then I move to put Jirachi on the Suspect list (even though it is by no means overpowered) because Body Slam and Iron Head with Serene Grace encourage luck over skill. And it's annoying.