Wireless Performance - more
I always use the profile plots for more meaningful wireless performance comparison and pulled in the NETGEAR R7000 and ASUS RT-AC68U for an AC1900 router party.
The 2.4 GHz downlink profile shows why the EA6900 earned its lower ranking for this benchmark. It starts with a pronounced dip in the 6 to 12 dB attenuation range. But its more significant problem is its earlier throughput falloff.
2.4 GHz Downlink Throughput vs. Attenuation
The 2.4 GHz uplink plot once again shows the ASUS' seriously low throughput. But it also shows the EA6900's throughput falling off much earlier than it should. The takeaway from this is that the EA6900's 2.4 GHz range performance isn't as good its competitors'.
2.4 GHz Uplink Throughput vs. Attenuation
I'll cut to the chase for the 5 GHz profiles instead of providing the usual blow-by-blow analysis.
5 GHz Downlink Throughput vs. Attenuation
While there are differences among the three products, it's more likely that you wouldn't notice a significant 5 GHz performance different in either throughput or range among the three. Especially as signal levels fall, they are as alike as three routers could be.