When I gave the Perdita vs Pandora example I was only talking about See the Unseen, not Immune to Influence. I guess I should have been more clear, but I didn't think it was necessary.
This is in no way inherently true nor is it true in the specific case of Ryle. He is, for example, Immune to taking WP tests from Harmless while he is acting.
Some abilities ignore entire talents such as Terrifying vs Harmless. Other abilities only ignore the effects of talents such as See the Unseen.