Deep within the Omegas lives a lengendary creature, its huge, can eat a lot and moves with 25 top speed. When 2 of them meet in open space they know no mercy and will not stop before one of them died or docked.
And then after a battle worthy the biggest among the titans, one of the Barges attempted to run away, the other one had no choice but to power up cruise as well, to follow its prey.
Also, Its all Blodos fault and Barge ram is the most scary thing I have ever seen.