Well, Forretress is FAR better overall and with its whopping defence it takes a physical attack just like we take biscuits. Forretress can also explode, defense curl and rollout, counter, sunnybeam, it can't be poisoned, light screen and reflect, have access to earthquake, it learns bide, rapid spin and Zap Cannon and Spikes! Forretress is one of the most popular spikers on Netbattle along with Skarmory, etc. Not to mention that Forretress can also rapid spin away those other spikes (and leech seed) and it makes a fantasic physical tank. It can also defeat Skarmory's with Zap Cannon (although it is not Forry's best purpose) and it can easily defeat the Blisseys that use Toxic.
Now, what can Volbeat do?(Apart from thunderdancing (which is terrible) and Baton passing).