@simon33 No, artillery is not better because they have the same movement. The point is to have the best soak stack on Russia sack.
It is necessarily true that you’r best numbers, given a highly predictable set of 3-4 moves is to collapse your G1 buy with all the stragglers from Bulgaria, GSG into Yugo (or not…) into a streamline with your G2 purchase of two-movers. Those are your only new guys getting to Russia Turn 6.
We could debate transports, but movement justifies at most an extra two turn 2 and/or 3. And that begs for a carrier that makes the buy a bad deal for how long those ground-pounders take to hit Russia.