Why oh why...
I want you to know right off the bat, I don't approve of the pokémon. In general, I have a special spot in my heart for pokémon, and that spot beats with an intense hatred. That being said, I cannot help but give you an 8!
My reasoning is two fold...
1.)You had a nice funny bit at the end
2.)You have a fun style
The thing keeping this from perfection was the kind of anicliché (anime cliché) with pikachu bursting through the beam and whatnot. It seems cool, but the idea is done to death. However, the rest of the fight was a lot of fun, and impressive to watch. I would love to see what you could do with a setting of your own creation. I think you could put together some really impressive action scenes if you tried a different setting, and if it's something you think up I believe having that personal investment in it would help you create something even better.
Keep up the great work!