As far as I can see, why would you ever have a J2 strike.
J1-Lets you hit allied units hard. You can wipe out both Brittish transports and the battleship; the Australian navy and the American transport, and NSW or Hawaii if you feel like it.
The downside is that you bring in the US war funds in real quick, and you will not be able to take the DEIs for a cupple of turns, so you need a quick win.
J3-It lets the allies set up their units, defend strongpoints, and capture the DEIs, but the USA will not get a big income. But you will have 2 bild turns. J1 transpot builds can be used aginst the DEI or Mayla, and J2 will be used aginst the Phillipans. You can also destory China before the war, and really gear up aginst a weak US.
J2 will just be the worst of both. The allies will move their units, and defend their units and capture some of the DEIs. But you will still have a weak transport fleet, and the US will get an extra 40 IPCs of units.
Mabey I wrong, I’m not saying the games broken or J2 attack people should be shot, but when I think about it J2 makes less and less sense. Could people plese give me their views. I’m probobly wrong anywhy.