Regarding Scenario 2, all I remember is that Japan gets a beefed up OOB for the IJN, IJAA, and IJA and perhaps a better resource situation. Still, I think the Japan should in the long-term still be outclassed by Allied power. Reluctant Admiral / Between the Storms significantly beef up Japan's military strength at the cost of reducing their early resource situation, making it a necessity to grab resource/fuel producing areas fast.
I might be wrong because I play Scen1 only, but I think Scen2 adds:
- A whole army arriving after few months (maybe Feb-42) which includes veteran divisions.
- Tojo mounts Ha-35 and arrives in June instead of September (is it correct or I recall something foolish?).
- More pilots coming from the pipeline.
- Shinano is a Tahio-class CV instead of the crappy CV it is in Scen1.
- Starting pilots are better overall.
- Few more IJNAF groups, mainly few more Nells/Betties and few more Zeroes. Actual numbers are totally out of my minds.
- Bigger initial stocks.
- More factories (R&D and a/c production).
I might be completely wrong on what I listed above but it's what I do recall abut Scen2.
I add that probably, if you both are beginners, Scen1 is still ok. The whole point of my position is that, a part from a personal distaste, you can find a lot of good info on the forum on how to set up the industry and the logistics for Scen1. It's somehow easier to just follow advices and schemes, since you find plenty. Provided that setting up the industry and the logistics is probably the most challenging thing for beginners trying to approach JAP-side.
Playing a scenario as suggested can be quite good, especially if you are complete beginners. It also gives an insight on the other person, so that you can understand if you are compatible as persons/players before starting a long-term committment such as a GC.
Just my 2 cents.