Ok... Some figures.
6 days - 1st to 6th
12 DTs per day
So just under 695k per DT.
But it's not winning damage, it's all damage. And as someone pointed out that's usually more than 12, I'd say nearer 20 to 25 between winners damage and damage taken. And also remember that most DTs have about 2500 players.
So that's now
695000 / 2500 = 278ish points of damage per person per DT on average
Or another way
695000 / 1250 = 560ish points of damage per pairing ( 2 people in a match ) per DT on average
And that works out at only 10 points per minute of damage per match (so a match in under 3 mins would break even there at 25 ish damage) which since most people who intend to place top 150 and aren't playing PC work on PPM (points per minute) would rather take a loss quickly than win slowly will run no DR and always play for the win isn't actually that hard to do.
As folk said, yes serious players aren't gonna drop points just to boost damage score... But serious players are also the folk that will not be reducing damage but instead going "sure, hit me with a furious Stanly
since that means I can Fury Jackie next turn and kill you round 3" and next thing you know it's end of match with 20+ points of damage, and also happily managing maybe 20 matches plus in a single DT if they get other serious players since quicker matches even with losses = more PPM
Yeah I doubt we'll see the 50 and probably not the 40 either but I think the rest will be no problem