Yeah these graphs are showing almost the same functionality as ICE. As he said, ''one graph without switching contexts or graph semantics'', also a 'shader style'' nodes where everything is exposed for connections. So, possible to manage by your goal, If you want a new modulator or something , you just plug the appropriate node, without taking care of attributes created in who know what another network. And more important, possible to use by people who knows little or nothing about under-the-hood structure. Anything of that never ever worked in Houdini - some of displayed graphs could be a two, three or more different networks in poor Houdini, plus expressions, paths, whatever.
Also, there is tradition of rock-solid solvers in Maya.
All in all great news for people, able to use Maya at work (that is, when someone else is buying the licence
).
On Blender side, had time to play with it few weeks ago, there's huge progress noticeable in few months, Octane for 2.8 is great news as well. Great generalist app, Maya if there's need for more, and that's it.