First of all, I’m not claiming that Kane and General Vader were combined into one character in the early drafts, nor did I ever say that. I’m saying that the Vader we ended up getting post-ESB is basically a combination of those two characters (though from your previous post it seems he was also combined with Prince Valorum). Vader always being Luke’s father is technically correct as the current character of Vader is basically half Kane, who was a rogue Jedi cyborg and father of Annikin (Luke). There’s even the part where Kane sacrifices himself to save the heroes, just like ROTJ Vader.

Second of all, I think it’s very obvious that Lucas is talking about Kane and not Annikin in that quote. He likely mixed them up. As I already said.