There is a huge but still very subtle difference between the two kits. The Moebius kit is much crisper and has the lines and shapes that we all wanted from the Aurora kit. The bulging fs bay on the 1/128 kit has been pretty much corrected on this kit. In the smaller scale, the nose looks closer to the correct shape when viewed from above, so no correction needed there. The sonar domes are still a little long and a little far back and the prop tubes are still the wrong shape and too far apart.
Fixing the Moebius won't be as much work as fixing the Aurora, but there's still some work to be done, if you're so inclined.
If you're lucky enough to have a PL re-pop kicking around, with a little cutting and filling you can easily replace the Moebius tubes with a more accurate shape (that's the PL below, in black plastic). If you want to convert the Moebius kit into an 8 window version, reshaping the nose and manta fin in this scale and extending the deck would be a snap. You can use your PL clear windows, some fine sandpaper (or Micro Mesh) and plastic polish to shape and clear the new old windows.
With a little work on the Moebius, a little extra work on the PL, you should be able to create the envy of any bathtub fleet from either.
And there's also the wonderful thrill of going into a model shop and discovering a little tiny new Seaview box hidden in the middle of an amazing section of largely Moebius products. Just suddenly back in 7th grade again. You'll never spend a better $25. Thank you again, Moebius!!