Phenomenology says that we all have subjective worlds that are reflected in our opinions and views.
The Speculative Realist conference philosophers spoke to the point of how that formulation of reality leads to a closed loop of philosophical correlation. Thus, their problem has been how to find something outside of this closed system.
The concern of an orientation upon objects is how that correlation occurs outside of the talk about it, encompassing the talk about how we are to get outside of it.
The issue here then arises between an object which withdraws from view (Harman) and the subject which is never expressed or communicated (Lyotard).
The difference, I say, lay more with orientation and less with ontological ubiquity. More with the manner that the subject is able to view the world and less with how there is a “real” world that subjects can only partially view.
The difference is thus between the phenomenon and the object. Less about how we situate philosophical definitions and more about the manner of being able to see.