If you like longer grinds stick to the Gz1. Along with the previously mentioned
benefits you also can run higher crew and obtain your max exp longer. Gz1 to
Europa long grind.

More support slots is usually better, though if you don't have the crew I guess it matters
little. However the added plane space should allow you to load more fighters/bombers and
effectively use more by putting them in more critical situations more often and
sacrificing more of them than you normally would be able to on your GZ1.

Also the extra launch space allows you to put more planes up in the air, potentially
faster aswell as most people will switch from 2 groups of 4 to 3 groups of 3, at the same
time this gives you better coverage abilities as well as you can spread the fighters out
more for a larger enemy blind zone around your BB's as well as more expansive coverage
from bombers. Both of which are crucial =)

I hope this helps =P

the graf zeppelin 2 has 7 support slots.

any more support slots? im in need of some of those

sure its worth, unless you like/need the aa slots of the GZ1.
more planespace (74 T3s instead of 52), launch 9 planes instead of 8, more DPs, but slower
and useless gunslots.

Larger aircraft space and another support slot.

I launch planes in pairs so the +1 loading capacity doesn't bother me.

CV4 vs CV3

lvl 80 ship xp vs lvl 68 ship xp


go figure