I am utterly shit off road (having taken it up in late 40's) and kind of a competent above average road rider, but I still know when I like the feel of a bike and will play with suspension until I like it.
Off road is harder for me to judge as its not as simple as riding the same section of road as you never hit exactly the same bumps / tufts / ruts from one pass to the next (well I don't!)
Having spent a chuck of change having FE suspension professionaly serviced / reworked for me what I have noticed is it "feels nicer", I am more comfortable, my dodgy arthritic thumb joing hurts less and I no longer feel like I have been whacked on it when hitting bumps...
.. Very much doubt I am much faster, but the extra comfort and confidence means I ride better, plus spend more time looking where I am going rather than scanning the ground for bumps to avoid.
I also think it is harder to setup an Enduro bike as most of us will ride a lot of very varied terrain, regardless of if trail riding or doing an Enduro.
Am wondering if the taller tyre might help with comfort for us old folks with buggered joints?