Analogies are analogies, they're unnecessary in this case (nowadays). Because we got law to punish people who deface a website, and the law stands on its own.
Its akin to people who call 'copyright infringement' 'theft'. Its not the same, its a different mechanic, damages are different, and... different laws apply. That doesn't mean one's right or wrong or anything like it; like I said: the laws stand on their own, respectively.