John Koller believes PlayStation Vita's hardware sales are on target.

But SCEA's director of hardware marketing, John Koller, insists that the company is not concerned by the numbers.

“If you look at the word-of-mouth factor, it’s really strong because people are bringing it home and really enjoying it,” he told GameSpot in an interview at CES. “That satisfaction rate is really high. But also in terms of when we funnel in additional hardware units, that’ll dictate how many sales there are and how many sell through.

“We’re still in the first couple weeks, and we’re trying to get as many units into market as possible. We’re going to give it some time, but overall those numbers have been to forecast.”

The PlayStation Vita rushed out of the blocks initially, selling 321,000 units in its first 48 hours. But numbers have been significantly lower since, with the second week figures dropping down to 72k units, and the third and fourth weeks settling at 40k.

But Koller's confident that strong software support will drive the system's success going forward.

“What we really wanted to do, and I think we learned from past, most recent, handheld device launches, is that you don’t want to launch strongly and then go dark for three or four months and have nothing,” he said.

“So in subsequent months for Vita, we have launch, then we have MLB, then we have Mortal Kombat, then Resistance, then LittleBigPlanet, then Call of Duty, and Assassin’s Creed.”

It's certainly a strong roadmap for the system. We're looking forward to seeing the type of software that gets announced at E3.