>>38007689Mega-evolutions are the same Pokémon but redesigned to make it awfully edgy. You can see Mega-Aerodactyl or Mega-Mawile and recognize them as Aerodactyl and Mawile on steroids. Cross-gen evolutions worked as completely new Pokémon but being related to their evolutionary line, like Crobat or Mamoswine.
Mega-evolutions is a stupid idea because only works in battle and they aren't natural. Cross-gen evolutions are.
The only Mega-evolution that looks like an actual evolution is Mega-Heracross, because it is a beetle too but you see it and cannot see Heracross at all