f+1+2 Oki Mixup
Armor King's f+1+2 power crush guarantees a valuable oki mixup when it connects.
f+1+2 knocks down the opponent such that if they get up directly or get up backwards, they get hit by f+1+4 or a well-timed ff+4.
The f+1+4 does 22 damage while the ff+4 does 24 damage. Since the ff+4 timing is very hard to land, going for f+1+4 is recommended.
Furthermore, ff+4 will also whiff if the opponent does a forward roll while f1+4 will always hit as long as they get up.
The opponent can avoid being hit by staying on the floor and doing a slightly delayed get-up kick as a punish.
This is where the mixup comes in; Armor King can hit opponents who stay on the ground by doing f+4.
Even when the opponent gets up and blocks the f+4, Armor King is still left at +3 and can take his turn.
The risk-reward is quite favorable since the worst that can happen is taking a get-up kick for ~10+ damage while Armor King can get extra ~20+ damage when the opponent guesses wrong.