What percentage of poker players actually win

[S93]

MTT normally pay out to the top 10 to 15%. I would think therefore over a period of time this would reflect the winning percentage in terms of players. On SnG the payout can be anything from 50% (DoN) downwards. I would guess around 10% of guys playing SnG's end up winning.

Yeah but in MTT you can have a massive ROI even if u have a 5%< ITM if u just go deep enough every time u cash...