I believe it's more complex. Below output of a few tests. Wired is kind of good and stable and generally in terms of WLAN Windows sucks. Other than that I have no idea.
Bold numbers for WLAN. Mbits/s. Intel7265.
| server | wl w10 | eth w10 | eth arch | r7800 | wl arch | |
|---|---|---|---|---|---|---|
| client | ||||||
| wl w10 | 113 | 113 | 134 | |||
| eth w10 | 120 | 883 | 856 | 290 | ||
| eth arch | 99 | 926 | 909 | 391 | ||
| r7800 | 103 | 899 | 859 | 827 | 405 | |
| wl arch | 392 | 554 | 563 |