I would imagine that drivetrains with a greater number of total teeth wear out very slightly less rapidly.

According to Sheldon sprockets with even numbers of teeth will reduce drivetrain wear and longevity as well so you could make a case for choosing a 48×16 over a 45x15 (both 78.9gi)

If your riding fixed and want skid patches, I guess then the most optimal drive train would be one with the most total teeth, an even toothed cog and a odd toothed chainring (?) So something like 49x18 would be just about perfect theoretically (I think...)