Facets of her are there, I agree. But in the kind and in the degree of extremity of her choices, I can't say that it aligns all that well with my view of her.

I can see her flinging herself back into Angel's arms, but not immediately after 200 of her Slayers.

I can see her being rude to Spike, but not cuting him down to Angel behind his back.

I can see her complaining that Dawn is whiney, but not when Dawn is being magically abused by her boyfriend.

Etc.

It's not what Comic!Buffy does, exactly, it's the way, the time, and the execution of what she does as she does it.