Best Tip in Guaranteed Rewards on Deployment missions - Don't Rely On FIGHTER ELEMENT OR TYPE Always unless 20k Above!
More Powerful fighters will guarantee 90% Rewards!
*If you are a new player in SGM please don't get despaired. There's a lot of ways to still obtain the rewards from deployments as long you can put in both the right highlighted fighter type and variation in.
Of course chances of getting the reward may be 50 - 50 but still that can be improved overtime as you level up slowly slowly your fighters overtime.