Spark plug wires question

[Konstantin Bogach]

Hi.
To my surprise I discovered that my two 200tq have different resistance
of spark plug wires.  Both Bosch with loom, but one has ~6200 Ohm and
another ~5000 Ohm.  The spec per Bentley is 5 KOhm.  The car with ~6
KOhm wires has good spark.  Spark tester measures 20 KV on coil wire and
10-14 KV next to spark plug.  The car with right (5 KOhm) wires has low
KV on the coil wire (coil or power stage is a suspect) so I can not
compare KVs measured next to plugs on two cars.

My question:  Is wire resistance different for different model/make?
Does it mean that I have wrong wires?

Thank you.
Konstantin.