The United Penguin Commonwealth wrote:Here's a video to give you a sense of what the legendary/mythic pokemon are capable of (assuming the pokedex applies)
You yourself reminded us, that the Pokedex does not apply, but even without, we have enough material to point towards, for instance...
As of the recent years, the Pokémon animations became quite cool - looking at Generations here. They also give a good indication of the power of various Pokémon with metrics we can kind-of categorize. Remember Episode 2, when Looker and the police storm Viridian Gym? The Machamp bashing in the wall, the Arcanine melting another one (and a hallway in the process)? The melting point of Concrete (presuming the Gym is built out of regular concrete as we know it and not some Pokéverse specific variation or another material altogether, known or unknown to us) is at around 850 °C. At 907°C, you are at the boiling point of zinc, at 841°C you are melting Calcium. Mind you, that is only when these processes begin and does not account for the seeming ease and viscosity we see in the next shot (which makes one of the officers question his life choices).
That being said... for all the negative things one can say about the 12th Pokémon Movie (Arceus and the Jewel of Life), one has to say one thing: Who needs heavy artillery if one has a Llama that knows Judgement?