So how massive the fall of combined HW sales will be for 8th gen?

[colafitte]

People should not take for granted anything at the start of a gen. To put things on perspective...

- PS2 launched in March 2000 and Wii in November 2006.
- PS2 ended March 2000 with 1'41m, Wii ended March 2007 with 5'84m. Basically Wii had a 4 month advantage over PS2 in this comparison.
- After finishing its first complete fiscal year PS2 had already shipped 10'61m total consoles (ending March 31 2001), Wii shipped 24'45m (ending March 31 2008).
- After finishing its second complete fiscal year PS2 had already shipped 28'68 total consoles (ending March 31 2002), Wii shipped 50'39m (ending March 31 2009).

So it can be seen how Wii beat PS2 brutally in the first years of both systems, but look what happened later. PS2 ended with around a 60m adavantage over Wii.

If PS4 don't beat Wii numbers in the first 2 years but is just right behind and then keeps the same pace PS2 had in its day i don't see why PS4 can't reach 150m someday...The total 8th gen will be fine, the only ones who will be sacrificed are handhelds.

In conclusion...

PS4 - 150 million
Xbox One - 70 million
3DS - 80 million
Wii U - 25 million
Vita - 20 million

Total: 345 million