Usually, you don't get the same speed because of the capability of your wi-fi enabled device. You see it has it's own bandwidth limitations, the transmission rate that a device is capable of handling at a certain instance, expressed in bit rate per second. Besides the signal is also transmitted in an open range so expect all other kinds of signal interference that diminish the quality of the signal and its strength, thus affecting speed, unlike in wires, wherein the signal is insulated from all other forms of unwanted electronic disturbances. The signal speed is comparably slower but at 384kbps connection, data transmission is still very efficient even if it is subjected to degradation.