In terms of transfer speeds over wireless and over wires, we've come such a long way - to the stage now where WiFi is actually capable of more bandwidth than existing ethernet cables, but not for much longer as the IEEE has approved a new Ethernet standard which allows for 2.5Gbps over existing Cat 5e cables, or how it is officially known IEEE 802.3bz-2016. Also IEEE 802.3bz-2016 5GBASE-T allows 5Gbps transfer speeds over existing Cat 6 cables.
As mentioned, the current 802.11ac standard is cable of 6.5Gbps transfer speeds and this is only going to get faster with the new 802.11ad around the corner. This advancement just helps bridge the gap between existing Cat 5e and 6 with the newer Cat6a and Cat 7.
