As someone who likes to sculpt large scale personalities, I would say that it says Lincoln to me. While individual features may or may not exactly match known photos exactly, the overall impression is what matters.
I would only quibble with one detail point Einon made - re. the eyes. I agree that they are smaller than the norm as set by the majority of other models. But they look accurate to me. I appreciate seeing a bust that has eyes that would not look like a bug eyed monster if it was upsclaed to 1:1 size. While exaggerating eye size is an accepted norm in scale figure modelling, as scales increase I personally prefer to see the eyes rendered at a more accurate size....and I think Carl has achieved that.
Colin