difference in plug resistance

[Cipher]

Im getting ready to die and slowly cleaning up the evidence of my existence.
Today I found two coils for my bike and they were a bit grimy so I cleaned them up and proceeded to test them.
I removed the internals and tested the tiny resistor. Clean as new the innards were. Suzuki could learn a lesson here as theirs were prone to internal corrosion.

Anyway low of 4300 ohm high of 4600 a mid 4400 and a 4500

What impact does this have if any in practical use?

[fbody_mike]

I'd say none. I have found similar variations in brand new NGK caps. I recently went through a dozen new ones replacing the OEM ones on my bikes. Automotive resistance wires will have far greater variance due to their cable lengths ranging from a few inches to a few feet (think V8) and there isn't any downside there.
I will agree with the corrosion statement. I have found some rusty springs on the Suzuki caps I pulled apart, all the reason to replace them with new ones. Atleast the new ones will seal out the moisture better with the new rubber.