Your car analogy doesn't really address what was behind my earlier post.
A "low-deflection" shaft is not a "no-deflection" shaft. The cue ball still deflects, or squirts, when it is hit with side spin with a low deflection shaft. It just squirts less than it would with a regular-deflection shaft.
So squirt compensation is still needed with low-deflection shafts. There are several techniques to compensate. If one prefers to compensate for squirt by using back-hand english (rather than parallel english, front-hand english, or some combination of techniques), then he is best served by using a shaft with a pivot point approximately at the bridging point. With a low-deflection shaft, the pivot point is generally farther from the tip of the cue than one would normally like to use for a bridging point.
So, for players who compensate for squirt by using BHE, a regular-deflection shaft is a higher performance shaft, i.e., a "better" shaft.