It seems that MyVoucherCodes offers discounts for surveys on behalf of retailers. So in this case a popular sex toy shop was interested in their partners habits as well as their sexual performance. Can't help but feel there's a conflict of interest in here though. MyVoucherCodes cook up sensationalist headlines to attract more users.
as long as they got results they could spin it into sensationalist
like all of them are below 10%, "gamers bad in bed"
all of them are about the same around 60%, chose which one had slightly higher (like if pc had 64 and ps and xbox were 63, 61), "pc gamers better in bed than console gamers", vice versa
so there really isn't that much conflict of interest