Was the Ark program a success or failure?

The Ark program was launched in the latter half of the 21st century in an attempt to colonize habitable worlds in other star systems, perhaps to save the human race before the Earth collapsed under the weight of overpopulation. But was it a success or failure?

Ark I was sent to Alpha Centauri. Amazingly, Earth's nearest stellar neighbor had the highest percentage chance of having a habitable world. The Ark I landed on New Earth (later called Helome by the Vuduri) flawlessly and all proceeded according to plan. Until the colony was decimated by civil war then eaten by the Piranha Rats. I'd call that a failure since no one survived.

Ark II was sent to Tau Ceti. It hit an asteroid and spun out of control for 14 centuries only to be rescued by the Vuduri at Skyler Base orbiting Tabit. Eventually, Rei and Rome shepherded the Ark back to Tau Ceti to the world called Deucado. Since most of the people survived, I'd call that one a success.

Ark III was sent to 82 G. Eridani but there were no habitable planets so it made its way to Tau Ceti, the backup. The colonists crash-landed and had to build a civilization from scratch, mostly underground but they did survive so I guess I'd have to call that one a success.

Ark IV - where did that go? You'll find out in Part 5 entitled The Milk Run which will be released in 2014.

Ark V, sometimes known as the Stealth Ark, was filled with criminals and psychopaths and soldiers and their sole mission was to return to conquer Earth. They were defeated by Jack Henry, chronicled in The Ark Lords, so I'd call that one a failure.

So, 2 wins, 2 losses and one incomplete. I guess the jury is still out.