That's a pretty awesome SWR meter and one fine tuned antenna you got there to get your SWR's that low. Please let us know how exactly you did it. Because I would love to know how to get mine down that low.
It's not likely very accurate due to the short length of the shaft and the proximity of the load to the window pillar as Craig found out the hard way..
I am not sure I am understanding your question. The lower your SWR's . The more efficient your antenna will be which in turn is better for your radio.