It's a survey of 1,000 people that found a 1% difference. Not really anything i'd take to heart.
Surveys like that have a problem of who participates as well. People who have niche products are more likely to respond because they figure they "owe" it since it's unlikely someone else will report. Hence why it's likely so many people who still love their PS1's had participated, and possibly the PS3's numbers as well.
It's most likely a case of selection bias.








