I can crop my pic's to resemble the above format, I can't see the actual pixel count (L & H) showing anywhere though. One of the main problems with this is as stated above by Andre, cropping a pic of some landscape looks fine, just a slice of whaat was originally there, but I take my pics with the full format in mind, if I slice mine I just get bits of a bike which make no sense.
Now, if you took your pic with the 1200 x 200 format in mind in the first place, that'd be wholly different.