I'd largely say, given what I've seen of Phil, that it's largely due to his hypocrisy (big shocker there, I know) and his sense that he's a victim. He doesn't acknowledge that he himself is a caustic, toxic person, but to him Wings would be what we view DSP as.
They both behave in a similar autocautocratic behavior with their chats, but Wings is much more blunt and quicker to call his mods on their shit from what I've seen and is less prone to the "lean-in" manual bans. Kingofgahlf wouldn't be quite what he is in Phil's chat if he were in Wings chat.
Phil also may see the differences in the way YT detractors treat him and Wings. I mostly see Wings' vids in snippets that mock his whining or ban montages, but nothing on the level of what you see with Phil, in both quantity and variety.
Mayhap I'm wrong, I don't see Wings' chat so maybe he's exactly like Phil and I've just seen more heavily edited videos.