It should be noted that, in response to the recent discussion, spider-sense has worked on illusions (detecting them), invisibility, astral projection, in addition to regular physical attacks. Someone with his gigantic canon will obviously have low showings as well, so there have been instances of him getting hit sans any sort of warning. Which feats you choose to count and ignore, and the weight you assign them, probably depends largely on which side you're attempting to argue for here.