I think in terms of market share, there is a clear winner (Nintendo) and a clear loser (Sony) with MS being somewhere in the middle there. I say this because Sony had ~70% of the market last gen and Nintendo had ~18% (IIRC). If you look at the market share pie now, Nintendo has seen the biggest gain, and Sony the biggest loss.
Understandably Market Share is not the ONLY definition of winning, but I'm sure Nintendo is very pleased with their results and Sony is well, not so much.








