I don't know why I complete overlooked this earlier. -.-
Delta said:
Yeah but this one has a spike. Just like the Sableye mega they added an extra thing and called it an evolution. Whereas with Swampert and Sceptile we see changes with their anatomy and form.
The difference between something like Sableye and Swampert is rather simple.
Sableye never had an evolution, and therfor was considered complete for the longest time. That fact doesn't change just because it has a mega. Megas are more like a form change than actual evolution in most cases, they keep the same name and its only temporary. Having a mega isn't a proper evolution, and since it was complete before, it wouldn't change that much, instead just amplifying what it already is. This kind of mega evolution is mostly for Pokémon that were already complete. We see the same thing in Mawile, who stays the same, save the double jaw. Again, just an amplified form of what it already has. Also again, this is because Mawile was already considered complete, and its "evolution" becomes a better version of itself, not a completely different Pokémon.
Kangaskhan is another example of this. None of these Pokémon have any previous forms, and none of them change drastically upon mega evolving.
Now, we can compare this to, like you said, Swampert and Sceptile. These Pokémon didn't really have any defining features that made them stand out (except maybe Sceptile's tail, but that did get buffed upon evolution). They got a more drastic over-all appearance change. They are more like proper evolutions in that sense. These Pokémon
had to evolve to be the complete forms they are (unlike my previous examples). That means they did not begin perfect. Evolution does not mean the Pokémon has reached its full potential, in most cases. We just believed it did. Now, with the addition of megas, we know Pokémon evolution can go even further, so why consider evolved Pokémon "complete" or "perfect"? The only Pokémon that were complete are those that did not have normal evolutions. They are as strong as that species can get, so there is no call for evolution. However, a mega for one of these "complete" Pokémon is simply that
same Pokémon... Amplifying itself even further. Sableye gets bigger gems, but nothing new. Mawile gets a second maw, but nothing new there either. Kangaskhan's baby grows to fight alongside it, but still, nothing new as the baby is present in the original design.