I want to make a battle that is nearly impossible for the player to win. I watched Thundaga's video on scripted losses, but it doesn't work with cutscenes as it requires the comments and those don't seem to work after the cutscene I have...
Well, I'm sure you will be happy to hear that those comments to create the event are actually optional. While super convinient to set up the framework of a battle event, once you playtest in Debug mode, it converts those comments into real code. After that point, you can delete the comments and build the rest of your event hassle-free.
If you look at the example maps, you'll find that both Gym Leader Brock and the rival battle on Route 3 lack battle definition comments.
So just to clarify are you having trouble making a battle that the player can't win? Or are you having trouble making the parts that happen after the player loses?
I was having trouble with having the game not send you back to a PokeCenter when lost. I thought I needed the comments, but it turns out that I don't have to use them according to the reply above.