The Rift (tech entry) implies that a major point of criticism/division between the Vasudans and Terrans is that the Tevs focused so much resources and effort into the Sol Gate project instead of preparing for another Shivan incursion.
Makes sense, yes, but there seems to be one piece missing from the picture--what have the Vasudans done with their resources and effort to prepare for another Shivan incursion? I ask this because there are a lot of conflicting signs about this dynamic--the Tevs have the TEI, an entire new generation of ships and fighters, the Balor, new beam weapons and pulse weapons, etc.--but the Vasudans have only shown or been mentioned to have pulse turrets of their own and a less combat-oriented logistics vessel class, despite having a much stronger economy/culture, etc.
Now, it's completely reasonable for the Shepsakaf and its group's ships to merely be an older, non-frontline unit. Heck, just look at the Meridian's battlegroup--same thing. But--and correct me if I'm wrong--there hasn't been any mention for Vasudan advancements or major preparations beyond 'reforming the Medjai' (until more is known, it's hard to figure out what that exactly means in practical terms).
The Tevs could also make the argument that, by bringing Sol back into the GTVA, they'd gain a massive industrial/resource/population/morale boost, for the entire GTVA. They could also say that the huge gains in scientific and technological progress in the field of subspace are major benefits for defending against the Shivans in themselves. Given this, alongside the TEI and its overt successes, I'm a tad confused about the dynamic expressed in The Rift. The cultural divide makes sense and adds up just fine, but the military aspect doesn't quite add up to me.
If I'm stupidly overlooking some points/info/implications, feel free to copy-paste and make me facepalm at my derping.