As far as i'm aware the granular solver in Houdini works very differently, making grains in TyFlow isn't actually using a special granular solver to my knowledge. Also Houdini is a big expensive separate piece of software, TyFlow is a free (He said very affordable when priced commercially) plugin made by one guy. As much as i love TyFlow and how incredible it is i doubt it's gonna flat out replace whole programs made by big companies with hundred of employees.
EDIT: Also, what you linked in that video is very basic and should be completely doable in TyFlow.
EDIT: Also, what you linked in that video is very basic and should be completely doable in TyFlow.