Wedbush Securities analyst Michael Pachter has suggested that the Wii U's Gamepad will be a hindrance rather than a help, potentially affecting sales, reports CVG.
"Essentially this is a solution in search of a problem. I mean, somebody had an idea - 'Let's make the controller a tablet' - and there aren't many games that are going to take advantage of that," explained Pachter at last week's Develop Conference.
"Activision never said anything to me, but I know that [for] big games like Call of Duty they said, 'No, we're not putting it on there if you don't give us a conventional controller'. So they gave in."
Suggesting that Nintendo got lucky with the Wii, Pachter went on to say: "It worked, they got lucky [but] I don't think they're getting lucky with the Wii U.
"They really believe that, 'If we're still novel, everything we do will work'. This isn't going to work."
Pachter has previously suggested that Grand Theft Auto 5 might launch this summer, and was vocal in his belief that the 3DS had turned a corner after initial slow sales.
He also said that a Wii successor would be released too late to compete.
The Wii U is scheduled to launch later this year. Reports have linked it with a November or December release.
Watch Digital Spy's Wii U hands-on video below: