Oh no, i don't want to shame you. I think you and your co-workers are doing a great job communicating with your customers and trying to help. It is not easy to keep track on all the games you are selling. Only reason why i know so much about TW:W is because i have followed it closely for over half a year.

Concerning the site i personally don't want to recommend. I was mainly sharing my experience with it and it is a tricky site. Sometimes it is correct and sometimes it isn't. Regarding games that are not out yet, it is always wrong from my experience. Even with games that has been out for long, the site a lot of the time still give incorrect results. I think it's better to check the specs from the games themselves and talk with other people about it. It is much more reliable than that site.

Again. Don't feel ashamed. You are doing a good job from my point of view.