Which system made a better come back after being an initial disappointment?

[Kerotan]

PS3 came from genuine doom levels to take the X360 in lifetime and the Wii for every year after I think year 4.

The Wii U has gone from Doom Doom levels to possibly Doom levels. It can have a good xmas but will drop hard in the new year. It's total sales are a tiny fraction of the X1 and PS4 combined. It's pretty irrelevant sales wise.