I think a Good Tip is to always use Genuine Information because:
1. The survey may try to "trick" you as in, seeing if two pieces of information that you provided match
2. They may be able to see if your Name, for example, matches the name of your specified Google Account.
Just a bit of theoretical Explaining - It should make sense for those who wanna know why you should submit Genuine Information! :)
Shunsui