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human
[DC Comics] How do the Lantern Match Ups work?

I've heard that Green Lanterns have a weakness to Yellow Lanterns due to fear undermining will, and Blue Lanterns are strengthened by Green due to hope being empowered by willpower. But are there any other specific details like that? How do all the corps bounce off each other?
gpt
It's not as simple as "Yellow beats Green", it's about which Lanterns can maintain which emotional states under which circumstances. Psychology, in other words.

Take Larfleeze, for example. Most powerful Orange Lantern ever. Gets punked by a Blue Lantern, simply because deep down in his shriveled little heart, he secretly hopes to escape the ring and the isolated hell that it's made of his life. Those sort of emotional vulnerabilities are the rule, rather than any colour-specific weakness. If you had a Green Lantern who truly loved someone, they'd be vulnerable to a Star Sapphire who could play on that emotion to weaken the Greenie's resolve. Not because Green is weak to Violet, but because that particular Lantern is vulnerable to Love. If you put that Lantern in a situation where Love and Will are pushing in the same direction (maybe they've got to save their love?) then they'd be stronger than normal, not weaker. Which is exactly what happens with the Green/Blue interaction - in almost all species and situations, having Hope is going to make focusing your Will easier, not harder. Ditto for the Blue/Orange interaction - in the face of some Orange nutjob trying to enslave you, Hoping to remain free is the natural response for just about everyone, so Blue Shields are a great way to defend against Orange assimilation beams.

The Green as weak to Yellow thing came up due to a special circumstance where Parallax (the Yellow/Fear entity) was captured inside the Green Central Battery, creating a yellow taint to the Guardian's ring system. During that period, all Green Lanterns had a small trace of Yellow Light inside their constructs which caused the vulnerabilities which gave rise to that whole stereotype. If they'd trapped Predator inside the GCB instead, Green Lanterns would be weak to purple instead.