Gilthunder, Howzer & Grimoire vs FMA Sins

The knights of the realm (from the Seven deadly sins) while hunting down the sins get word of people claiming to be sins and take off to kill these people.

No knowledge on either side.
Fight to the death.

Round one is FMA (classic)
Round two is brotherhood

Fight in an abandoned town.

The NnT team has a major advantage in strength, speed, and pure durability. Combined with magic, they can kill the FMA sins until they actually die with ease.