I like it, Sky. I can definitely see that winning against Gravity's most likely decks. It's sort of funny to see a Shield-based deck put out to counter Gravity 
However, there is always the threat of Fire Eaters, which could be annoying. I think the SS is a very good idea though, because I expect GG to send a Poison deck at us. Momentum'd Dune Scorps/Stalkers could really put the hurt on that deck, which was the main reason for the BBs. Hopefully it'll hold though.
I guess earth started losing to a poison based deck last war, and I think GG used one as well against earth at some point and won. And they lost to a stall from us in round 1 last time as well.
If they go actual scorpion poison, I think we lose with the antimatter. Each of those scorps is going to put in 200+hp over the long haul, and they'd bring at least 3 which I wouldn't be able to stop. The SS might handle just regular poison without the scorps, but that's about all.
The dune scorp grav/time combo might be particularly annoying. It opens the door to eternity to stop deckouts, and possibly rt for cc. The black holes aren't very effective at healing, and they have to choose between cc or getting scorps out. They should have first scorp out by round 2 or 3. Maybe something like:
55k 55k 55k 55k 55k 55k 55k 55k 55p 55p 55q 55q 55q 55q 55q 55q 55v 55v 5rg 5rg 5rg 5rg 5rg 5rg 5rk 5rk 5rk 5ro 5rt 5rt 5rt 5rt 5rt 5rt
I tried it out, they'd want to get the scorps out early which is hard to acquiire 3 quanta each for and important, so they might even ditch the rt and eternity. Would probably kill turn 11 without healing.
55k 55k 55k 55k 55k 55k 55k 55k 55p 55p 55q 55q 55q 55q 55q 55q 55v 55v 5rg 5rg 5rg 5rg 5rg 5rg 5rg 5rt 5rt 5rt 5rt 5rt 5rt
The death/deathstalker combo if they make it work, do 2 poison a hit, and possibly mixes with poison cards. Scorp probably out in round 2, maybe 3. This could kill in round 9 without any healing. Along the lines of:
52o 52o 52o 52o 52o 52o 52q 52u 52u 52u 52u 52u 52u 55k 55k 55k 55k 55k 55k 55p 55p 55q 55q 55q 55q 55q 55q 55s 55v 55v
If you want to bet on momentum scorps, a deflag immo rush would be a better choice I'd wager.
Otherwise, the antimatter dissipation stall should be fine.
I figure, it's your team Terro, and to me it looks like a coin toss. You guys know more about GG, jumblumba and the last war than I do, so what should I do? Here's my two decks I had in mind:
dissipation antimatter
4vc 4vc 4vc 4vc 4vc 4vc 4vc 4vc 4vc 4vc 4vg 4vg 4vg 4vg 4vn 4vn 4vn 4vn 4vn 4vn 58o 58o 58o 58o 58o 58o 592 592 592 592 594 594 594 594 594 5aa 5aa 5aa 5aa 5aa
immo rush for scorp - I left out purify because any fight vs scorps is going to be over in about 10ish rounds one way or the other.
55q 58o 58o 58o 58o 58o 58o 58o 58q 58u 58u 58u 58u 58u 58u 58v 590 590 590 5f6 5f6 5f9 5f9 5f9 5f9 5f9 5fa 5fa 5fa 5fa