All wi-fi follows the same standards, ieee 802.11 and operate the same. The difference between devices is the radio chip manufacturer, the antenna array and the software to configure the features. If it's a wireless mesh device then the signal it receives will be the same as any device in that location, and the bandwidth for the backhaul will probably be poor. Never place the repeat in the location of the signal issue, moving the repeater closer to the main AP should improve the backhaul throughput. Wireless signal follows Newtons inverse square law so twice the distance from the AP results in a quarter of the signal strength. Walls, doors and floors also play a big part in signal quality so the fewer obstructions between the devices the better. The frequency of the backhaul uses can also be a problem 2.4Ghz propagates better but is subject to more interference and lower bandwidth.