Turning thoughts into reality sounds more like imagination warping, or a reality warping with that power. Subjective reality takes the border or fantasy and reality and distorts it. Allowing fantasy or what isn't to be what is and vice versa.
Well, subjective reality is the power to manipulate reality via manipulating the boundary between fantasy and reality. Someimes, "thought" are not considered a "fantasy". So that's why. I think
Okay, thank you 3, because people are saying that Movie Sonic has subjective reality because the Master Emerald is stated to turn thoughts into reality.