I don't think comparing the PS2 to the Wii U in terms of power is entirely fair because I think there will be a much larger gap between the PS4/Xbox one and the Wii U.
Plus the game has changed. The Wii U is certainly not the Wii. It's not a reliable comparison. The Wii came out with an entirely original idea (yes adapted from older attempts from competitors but welcome to innovation) that the Wii U hasn't recaptured. Plus like in terms of competition they're all entirely different, the PS2, Wii, and Wii U.
Case in point is history is not a reliable way to predict the future in this circumstance.
Plus the game has changed. The Wii U is certainly not the Wii. It's not a reliable comparison. The Wii came out with an entirely original idea (yes adapted from older attempts from competitors but welcome to innovation) that the Wii U hasn't recaptured. Plus like in terms of competition they're all entirely different, the PS2, Wii, and Wii U.
Case in point is history is not a reliable way to predict the future in this circumstance.