Green was essentially an advanced servant created through a part of Negary's soul. He might not be comparable to Killer J or Noah who each represented an aspect of Negary, but he still had his own personality while also inheriting the past Green's consciousness.
Both Sarmyte's talents and capabilities could be considered top-notch, being able to rely on a bit of leaked Source Energy to eventually reach the third stage of release in a few decades. Even if he couldn't advance any further, he was still quite impressive.
If the circumstances were different, Sarmyte might have had a chance to achieve even more, but right now, he was too far away from anything considerable.
