If I understand correctly, the job of the data cable is to transfer current from a wall charger or computer to a phone. Through this current the phone decipers the zero and 1s to make it code/data. Now shouldn’t current flow at the same rate between two cables, provided the thickness/resistance is the same?
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Er… no. That’s just misunderstanding of how data is transferred on signal lines, forget about this current idea, got nothing to do with data rates.
Really, data rates have more to do with date of standard spec than anything else. The limiting factors are devices on either end which have to be compliant to standard and handle all this data. As USB comms standards are newer they are specced to capabilities of newer devices, that’s all there is to really.
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