I suppose that the powers are similar, but I think Maury's is a little different. He creates an entire dream world which interacts with and is adapted on the fly by the target's mind. This is quite different from Candace's (now Sylar's power). That power is a mental illusion totally under the control of the creator of the illusion; moreover, it is a waking illusion which co-exists and integrates with the real world. It selectively overrides part of the real "awake" world in a way that Maury's does not.
A distinction with a difference. It does not appear that Candace could telpathically read minds or project a thought, as such. Her power of illusion was more continuous and, depending on your point of view, more subtle.