Ah, OK- that wasn't probably the right thing to put on the sheet in his case then, as it makes her seem like something she's not.
Yeah, Lantz admitted to that.
If you have literal incarnation of All the World's Evil, then you get the amorphous shadow with no personality or powers. All the World's Evil is a void.
How does that differ from Avenger, then?
All the World's Evil is basically an idea. Avenger is the idea tagged onto Shirou's personality.
Essentially Avenger is blackened Shirou.
An incarnated Angra Mainyu alone was just that man-shaped blob thing summoned in the Third War and was quickly knocked out.