>>43174664Because Melmetal, as an offensive wallbreaker, is gaining new checks it can outpace an KO and with a bit of invest into speed over bulk, making it overall better in its job. Defensive mons on the other hand, like Hippowdon, are not only losing their ability to properly tank hits againsts mons other than Melmetal, they're gaining absolutely nothing in return for their speed investment besides outpacing ONE(1) key threat.
Make sense?
