There's too much competition. If you want to put a cute dancing baby video on the Internet these days, those babies had better COME WITH IT. I'm sorry. This video is just meh. Perhaps I'm jaded, but these babies don't make the cut. They need a bit more stage direction, better production values. Maybe if they can get the thinner one into the action a bit sooner, get some better choreography, find a better song, their cute dancing baby video can rise to the top of the (HUGE) cute dancing baby pile.
You may be thinking, "Hey, maybe Graby Sauce is dead inside," and I won't necessarily deny that's the case, but I'm just saying that this could be cuter.