Originally posted by fubar5
Actually MBA had an article last year that talked about the FS/HT issue. Based on research done by bicycle companies, all signs pointed towards FS being more efficient.
I think you need to differentiate between efficiency and performance. Just because something is more efficient does not mean it will perform better or perform better in all circumstances. Take for instance a jet plane (turbojet or turbofan). It is far less fuel-efficient than a turboprop but has higher performance (max speed, acceleration, time-to-climb, etc...). And in the realm of turbine engines, there are other design features such high vs low bypass... variable vs fixed inlets... Each feature offers trade-offs between efficiency and performance... complexity and added weight vs simplicity and greater thrust-to-weight.
For a more pedestrian comparison, take a Honda Civic vs a Ferrari FX. While the Civic is more fuel efficient, it's certainly not going to beat a 650hp supercar in a race.