Other than cosmestics, they have nothing in common.
You're asking us to compare a Toyota with an Crown Victoria. They are both cars, with 4 wheels. They both carry 4 people. After that... there is nothing in common.
One is a lightweight carbine, in an intermediate caliber. Compare to AR-15's as an analog.
One is a full sized battle rifle, in a full power cartridge. Compare to FN-FAL as an analog.
What is your choice? You want a lightweight carbine or a rifle?