Please don't get me wrong, I didn't mean anything bad by saying that it isn't hard, I was making a case for the acceptance of the score. I have submitted many records that are not hard to get either, but they are still fun to do and worth submitting.
Some old videos have probably been accepted where the video starts from the menu, but the current requirement is to start from either a cold start or a reset of the console, it also depends on the console. I recommend that you start form the boot up of the Wii U, I agree that it is more time on the video but it is worth it, details like that make the difference between your score being accepted in 1 day or 3 months. By the way, you can have as many failed attempts in a video as you want, you can record up to 3 hours if you want, and the boot up only has to be shown once.