Looking at the purpose of the route... Its not targeting the pax to/from 科學園... Is targeting those pax from 西九龍 to/from Sha Tin...
But the routing has a number of problems occured...
1) Why dont you go via Tai Po Road which is more direct and be able to go via Tai Wai to increase coverage...
2) Sha Tin City Centre and roads around are already over used with too much traffic already and conjestion occur regularily...
3) Also... I dont think the route could charge only $6.1 if it go via Lion Rock Tunnel...
4) I dont think the demand for the route would be that high as there is already routes within the area to/from Sha Tin covering the whole district...