Yes, that was me. For low-amp packs, it really doesn't matter, but when drawing high amps from a pack, every layer of nickel you add to the path of the current is a "resistor".
In a common 14S pack where the series buses are added first (and then parallel on top of that), there are only twelve 0.20mm thick nickel layers between the 14 cell groups. So, 12 X 0.20mm is 2.4mm thick of nickel. If you add the parelleling strips first, you have added another 2.4mm of nickel that the current must pass through to go from the negative electrode, through the controller and motor, back to the positive electrode. 2.4mm of nickel, vs 4.8mm of nickel.
Either configuration will equalize all the cells in parallel just fine, in fact...the added resistance to the parallel path is a good thing. When pulling common performance from common cells, one layer of nickel is just fine, and it spot-welds very easily and reliably. For high amps, one layer of nickel is a resistor, and using two layers of nickel is not the optimal choice. Using 0.20mm copper for the series current is four times better.