Sounds like the difference between pivot lengths - the closer your bridge is to your shaft's pivot length, the less effect stroke errors have....lo-deflect. shafts allow for a much longer bridge and still retain accuracy. Older hi-squirt cues needed shorter bridges.
This is actually a drawback of low-squirt shafts for most players - they can't control a very long bridge, and their normal-length bridge is farther from their pivot length than it would be with a high-squirt shaft, so their stroke errors have greater consequences.
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