I find it difficult to believe that a tractor that is likely to be 25 to 30 years old has only done 2700 hrs.
These tractors have electric hour meters, and they can't be trusted for accuracy, unlike the old engine-driven service meters on the old Cats, which are generally more trustworthy.
But the tractor is in good condition - it's just that the sprocket wear is substantially higher than the rail and roller wear, so either the tractor has been working in highly abrasive soils, or the excessively tight tracks have accelerated the sprocket wear, as Dave says.