that’s the problem with your opinion here, though. 99% of riders couldn’t tell the difference between a cruiser tire and a TT tubular, 99% don’t even bother to keep their chain from rusting. We’re not talking about this 99% though, we’re talking about the OP, who specifically want to go faster and increase efficiency. For someone who specifically wants the smoothest, strongest, most effiecent drivetrain, especially with a fixed drivetrain and they want to be able to put down more torque, it makes a difference. If for nothing else than the basic principle of spreading torque load. That is increased efficiency. This has been understood for over a century. You’re welcome to your opinion, but for the 1% for whom this matters, it both mathematically and practically holds true. Cheers.