2 Scenarios result in reduced loot:
- You joined the alliance AFTER the titan spwaned
- It has been <20 hours since you recieved your last non-reduced (full) titan loot.
Note that both are only triggered when you leave your alliance & join another one.
When you get reduced Loot, there are three things affected:
- You don’t get Titan Parts
- You don’t get the Rare Titan Rolls (Bonus Item, Emblems or Valhalla Coins)
- You get a reduced Loot Tier (not 100% sure on the formula for this)
- Guessing it is: Loot Tier = (Normal Tier) / 2 rounded up.
- In your case, A+ loot would be Tier 14 (on 11* titan)
- So Reduced Tier = 14 / 2 = 7 (VII)
You can read more here:
https://support.smallgiantgames.com/hc/en-us/articles/360019259174-Why-Did-I-Get-Reduced-Titan-Loot-