I checked it and that does work, Impaller. Check out this scenario to see what the board looks like after the first turn: http://warlight.net/SinglePlayer.aspx?TemplateID=89376
(just add one AI)
Starting points were India, HK, Inner Mongolia. 2 each deployed on India and HK, 1 at Inner Mongolia. India and HK both attack out in both directions with 3 troops (I'm assuming good luck so only 1 attacker was killed on each attack). From this point it's easy enough to deploy for 3v2 attacks at the remaining 4 neutrals, with one extra troop to spare.
Whether that scenario is the maximum income for turn 2, I have no idea, but it definitely works.