We interrupt this page-by-page parsing of Superman 171 to make a note of the last episode of this season on Smallville.
Did you also notice something fishy, optical-effectswise, in the teaser?
Look at this screencap and tell me what's wrong with this image of Clark's eye as he beholds the costume Martha Kent made for him.
That's right! The "S" should have been REVERSED as a REFLECTION in Clark's eye. Since the "S" shield appears normal in this REFLECTION, the only logical deduction is that Martha Kent sewed a Bizarro costume for her son. Because only a backwards "S" would reflect "correctly" in Clark's eye.