To my ear, if you set this on there's less 'fanatic' chasing after every single note of say a 5-note tension chord in every single instrument = Less clustered effect overall.
So it's not that we're not getting the tensions at all, just more intelligently handled depending on the instrument. And if you look at the yellow notice of percentages, you'll notice that the figure reported for each of your instruments differs from one instrument to the next, depending on what sort of instrument it is. An example: A Bluegrass Mandolin instrument will report a higher percentage number for a song with many complex chords than a Jazz Piano on that same song.

There's only one thing to do in crisis like this - Sleep on it!
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BBox 2022 Audiophile, Mac Pro Intel, OSX 10.6.8, 800x600 (TV VGA)