I think it all depends on how well the PS4 and 'XBox 720' launch. If the PS4 and 'XBox 720' launch cleanly ,I could see the Wii U selling at roughly the following rate:
Year 1: 10 to 12 million
Year 2: 12 to 15 million
Year 3: 15 to 18 million
Year 4: 15 to 18 million
Year 5: 12 to 15 million
Year 6: 10 to 12 million (Wii U replaced)
Year 7: 4 to 8 million
Total sales: 78 to 98 Million
On the other hand if Sony and Microsoft both stumble out of the gate, possibly releasing expensive systems, I could see the Wii U selling at roughly the following rate:
Year 1: 10 to 12 million
Year 2: 15 to 18 million
Year 3: 18 to 21 million
Year 4: 18 to 21 million
Year 5: 15 to 18 million
Year 6: 12 to 15 million
Year 7: 10 to 12 million (Wii U replaced)
Year 8: 4 to 8 million
Total sales: 102 to 125 Million
