Landmass plugin / open land ..Same technique?

just been checking out Open land from the market place but I am getting a little confused… so using open land you can use masks to set bound like on a slope so a set material will show but the landmass plugin also can set a material on a slope in a very similar way both can use noise to jitter the blending…

my question is dose this now make open land redundant has ue4 used the techniques from open land for the landmass plugin ? as the guy demonstrating it uses the landmass plugin but uses his open land material masks?

is there still a use for open land ? am I missing something?
has anyone checked how the landmass plugin dose the masking?