So I went ahead and checked the picture of Osborn against the picture of Obama and this is what I got:
A few interesting things about this;
1) Land does draw a little bit more than we give him credit for. The face and pose are subtly changed, mostly for the better. It's very interesting to see what he thinks of as "menacing" in the face -- he lowers the upper lip, curls the brow, hardens up the right side of the brow and nose.
2) It's interesting that he interprets evil as having a larger upper body; with most artists I'd say that's no big deal, but when it's on the same page as the Y-shaped Spiderwoman torso I believe we can legitimately wonder. I also suspect Land might be one of those artists who dislike drawing hands -- he's taken a lot of short-cuts to get out of it here, especially Spidertorso who looks like she has turkey basters at the end of her arms. The Spider-Man hand pose is classic and could very easily be traced.
3) Are they really trying to equate Obama to Osborn?