2SD:
"Not even the best set-up enduro bike will hit a rock "at too high a speed", and simply sort it out. It always throws a bike off-line, and unsettles the chassis.
Read your own words again, how will a 790's rims survive your scenario of "hitting the next ditch even harder"??

Especially with the on-the-limit rear shock seals?

"
Struggling to see if this is you stirring again
too high a speed is relative, higher than it would have with poorer suspension is "too high a speed"
and ditches havent broken my rims, it has in the past bottomed out my suspension and broken other stuff. With tyres at high pressure you will manage a fairly hard hit before breaking the rim anyway, and on top of that, most owners wont complain if the rim is shot and just upgrade it like on any other bike anyhow.
rear shock seals...you are trying a bit to hard there...there was a weak batch, and ktm pays the repair anyhow
taking hard hits is where the 790 will outshine the t7 the most. Its oversprung with people weighing less than 100kg having to take out all preload and go low on compression settings. This also gives it the harsh ride.
2SD you yourself just said the 43mm tubes on the T7 will have less friction will have better compliance on smooth gravel.
The T7 is undersprung, with even 80kg riders needing stiffer springs, this is not brand bashing, fitting springs for your weight is normal, but most riders dont.
so most riders will baby the T7 because you will bottom out on the hard hits and most riders will not have to baby the 790 but to the contrary feel the bike beg for harder hits because thats where it shines.