I see where you are going Goldenduff, and you got a point.
however how good the solder is doesn't directly relate to the cross section of the connector.
For example, a 5.5mm connector can perform much better than a 8mm connector, if the 5.5mm connector has better soldering surfaces than the 8mm.

But your point is valid, swapping to a connector with better soldering surfaces will improve performance of the connection.