The old Scans_Daily had a set from Iron Man 2099, when Spidey took out Arno Stark and his SUPER FUTURE IRON MAN ARMOR.
Norman Osborn may be wearing an Iron Man suit, but he's not nearly as good with it as Tony Stark would be... and Spidey has handed Tony his ass more than once.
Spiderman has fought the Hulk, the Juggernaut, and a Herald of Galactus. Norman Osborn in power armor is not in their class.
(Side note - I would know none of this were it not for Scans_Daily.)