I'm Curious Why some of my Videos get more views than other ones

It is something I cannot figure out. Why do some of my videos get the most views, while others which I thought are great to watch, they seem to not get viewed.. maybe they are hard to find?  For example the one of the most popular videos is this:

I wonder why this one is the best hit!  But I'm glad you watch it!
Here is another version, which I thought was more improved:

Thanks for watching, learning and enjoying!! Come to my youtube channel for the full collection..
BTW there are other videos of me online. I'm just not revealing where they are yet! :P  xox

Next post tomorrow will be 2 of my videos which get hardly any views.. but I think they are really worth watching! You decide whether you like or not and let me know (you can feel free to comment)