Actually you're all wrong. The tweed version has the most mojo and therefore sounds better. I have had these for a while now and had an Ashdown ABM500 EVO II and an Aguilar AG500SC (I still own the Aguilar) and they're the best sounding cabs I've ever heard. Honestly.
About the optical illusion: you're right! Except on the last pic, the bottom cab seems bigger, but that, of course, is perspective