My 2 cents on the subject of tuner loss.
A tuner will Always introduce more loss to the system.
If the total power output of the transmitter is not improved(ie, at
2:1 SWR), then using the tuner to reduce SWR to 1:1 is counter
productive, isn't it?
In other words, getting the SWR down to 1:1 from anything = 2:1, will
always cause a reduction in total power out.

Pat W0OPW