Over how long? advantage to 2 bigger Chainring/cog sets is the tooth wear is slower because there is more to share it
.. and the flexing the chain friction is lower because of the larger diameter .
NB.
Belt drive sprockets are fairly large , because the carbon belt will break sooner if forced to wrap around too small a Sprocket.
Last edited by fietsbob; 10-26-15 at 12:40 PM.