Do you think Ps4 will surpass Ps2's whopping 155 million consoles sold?

[Mummelmann]

Not even close, this won't be a generation like the 7th gen, where two consoles tapered off really slowly and basically moved hardware for a decade. Even with the Wii U doing terribly, handhelds dying off and the Xone doing low moderate numbers, the PS4 has yet to come close to a 20 million year, and won't reach it this year either by the looks of it, while the PS2 had several consecutive 20 million + years.
To think that a peripheral that costs more than the console itself will somehow reinvigorate the market completely is foolish at this point, it sounds like the Kinect argument all over again, and that was about 1/3 of the price at release.
The casual masses won't want to shell out a small fortune for VR and the for enthusiasts (such as myself), there will be alternatives, and the promise of much better hardware to pull it off properly. When the casual consumers do make the jump and prices are more mainstream friendly; Facebook owned Occulus Rift will be a terrifying competitor with the massive influence of their ownership and potential customer base.

So, for me; no, the PS4 won't outsell the PS2, it will have a hard enough time beating the PS1, in my opinion. I honestly don't see how people can still think it will sell 155 million+ units, there is nothing to suggest that this is possible at this point, let alone VR being the main driving force behind this sales surge.