Well first, the finish will be different. The Dark Earth Burst is a satin finish, and the standard is a glossy finish. May not be a big difference to you, I don't know. I have both satin and glossy finish guitars. I prefer satin on the necks, but it's not a huge deal either way.
Next, it would depend on how new the standard version is. The picture above appears to be an older one with the SD Invader pickup in the bridge position, and appears to have the older body with no rounded off top where your right arm would rest. That would be the same as the Dark Earth Burst, which would definitely have the Invader and older body. If the standard black/silver is a newer one, it would most likely have the signature Syn pickup in the bridge position, and the rounded off top.
If they are both the same, then you should pick whichever finish you like better. I would choose the Dark Earth Burst because it is relatively rare, and it's a good look. I have one and it's the guitar I play the most - although I did switch out the Invader to a black Syn signature pickup, which I much prefer.