Nice find, but not that much different? https://maps.google.com/?q=51.18321,7.22183 vs https://maps.google.com/?q=51.18321709,7.22158692
Uplinks include the current GPS coordinates, if any, that the gateway may include (which may be fake; TTN cannot tell). And it seems https://www.thethingsnetwork.org/gateway-data/gateway/eui-0908070605040302 returns some older cached value, or more likely whatever has been entered in TTN Console.