Laxa can correct me, but if I understand right:
Calindu + 6 + 5 - 6 = +5 (Games 1 & 2), 0 (Games 3 and after)
Dragoon - 2 - 6 = -8 (all games)
So you would have +13 upgrades for Games 1 & 2, and then +8 for Games 3 and after. On top of that, you would also get +15 or +5, depending on if you reused 4 cards or not. And then on top of that, you would get +6 if you used a mono.
I would get 0 upgrades. On top of that, I would get +15 or +5, depending on if I reused 4 cards or not. And then on top of that, I'd get +4 if I lost the previous battle (stacking).
This does not take into account our last Strengths though.