All tests are done with Xena Networks specialized test equipment (XenaBay),and done according to RFC2544 (Xena2544)
Max throughput is determined with 30+ second attempts with 0,1% packet loss tolerance in 64, 512, 1518 byte packet sizes
Test results show device maximum performance, and are reached using mentioned hardware and software configuration, different configurations most likely will result in lower results
Translation: These results are reached only within ideal and specific conditions, this is the maximum which is unreachable in other setups.
You should read this the same way as car fuel consumption, electric car drive distance, display contrast, WiFi speed, ...
Just use these numbers to compare the huge performance difference of both devices an upgrade if you need better router.