I think what makes mine different is my niche. There are only maybe 100 YouTubers that I know of making strictly Disney videos. (From research I've only found 100 that are active). So competition compared to gaming or beauty is a lot smaller.
I started off with personal vlog videos, so my early subscribers really truly know me.. Now it's more fact and diy stuff and then me trying to move to Shanghai to work at Shanghai Disney. So my subscribers are basically following me on my career path with Disney. Thats what makes me different within my niche. Only 4 other people have posted videos about trying to work for Shanghai Disney. Once I get there (if I do) it will be a lot harder (since it's China and all). But I like that my subscribers are following me on my dream, and supporting me, and also huge Disney lovers themselves!