You can get an idea by zooming in on points of interest and comparing the two waveforms. Look at the changes with more regard for timing than amplitude.
If you have the patience and tools doing an overlay can be revealing.
Capture the waveforms for the same time period and scale them to similar amplitude ranges.
You can also change the Settings > General > Theme between captures.
Begin by using this trick:
I’ve also found capturing on an iPadPro to be easiest because the large touchscreen allows more precise vertical scaling … the trick there is to use fingers on separate hands as far apart as possible and drag the top finger up/down while holding the bottom finger still; then release the top finger first. That way with a little patience you can target down to 1 watt.