Ran some calcs for Lopunny in a VGC enviroment and was going to save them anyway so figured I might as well share.
Fire Punch isn't listed since it dealt less against relevant targets than HJK anyway.
I am going to make some defensive calcs later today just out of curiosity mainly, but I don't have the time now so I'll add it to the pastebin later.
If you remember any relevant targets that I forgot about then I'd be glad if you could point it out, since I want to be entirely sure about when I breed my Lopunny about what nature will be the most beneficial, and at least be aware about certain matchups for it.
http://pastebin.com/5UutmnCk