Analog Inputs: A0 - A5, A6 - A11 (on digital pins 4, 6, 8, 9, 10, and 12). The Yún has 12 analog inputs, labeled A0 through A11, all of which can also be used as digital i/o. Pins A0-A5 appear in the same locations as on the Uno; inputs A6-A11 are on digital i/o pins 4, 6, 8, 9, 10, and 12 respectively. Each analog input provide 10 bits of resolution (i.e. 1024 different values).
Apple to apple comparison:
Analog Input Channels:12, 10 bit ADC channels
Analog Output Pins:0
Analog Input Pins:6, 12-bit ADC channels
Analog Output Pins:1, 10-bit DAC
Tian is far better than Yun if you need analog I/O.