It's not that simple.
Cable goes A to B, little interference / noise in between. Fastest.
Wifi has many factors. Simplest is the max capability of voth antennas, sender and receiver.
And the common ground for both.
While most wifi network cards and routers show around 300mbps, they communicate at 150.
The router might say it has 450 or more capability but then, connected to the wireless device NIC (network card) it only achieves a fraction of it, starting at the top speed of the other devices and slowing down to a decent transmision speed.
In windows, find you network adapter, right click, select Status and you'll see what is the speed used by the card.
Then, there are standards B, C, N and AC. The standard must be common to both devices (router, devices).
Fastest, newest ac router won't improve the speed of a B class ipod. Both will communicate at the slowest device speed.
Many devices on the same wifi will somehow slow traffic. The router must serve them all. That is why now you have dual band routers allowing fastest devices run in the fastest 5ghz band while legacy, older thingies use the 2'4ghz band.
Channels: routers have many channels to pick from. Same happens with your neighbors. Your traffic will run on the same lane as your neighbors, slowing both down, if you share the same channels.
Use a sniffer program to find a channel with less routers on it.
Research shared vs overlapping channels before you pick one.
I'm avoiding getting into too much detail, but as you can see there are many factors. Reflection, interference, etc are skipped.
No way wifi will match cabled speeds.
Iz
