This is the problem with wireless equipment and why you can only trust reviews so far. The vast majority of routers transmit at the maximum legal power. The main difference being the antenna layout in the unit. How well they work is a combination of the unit and a persons house. The house being much more important. This is why you will see some people saying how well a router works and other saying how bad the signal is. Their houses are different.
I have not seen this router before but there are lots on the market. The only option I could see that may help is if it has the ability to change the transmit power and the default is not set to maximum. Since this router does not have external antenna you can't use the common trick of putting larger antenna on. Really you only option is to try to see if moving the router around the room or in another room makes a difference.