PetroklosTo begin with some technicalities, their AoE damage wasn't increased, their DoT DPS was increased but their DoT total Damage remains the same. 20 ticks of 3dmg changed to 15 ticks of 4dmg, 60dmg both in 10 and 7.5 seconds respectively.
More DPS is worse than longer afterburn. Hitting a flare every 7 seconds for maximum dps isn't the most difficult task in the world.
I'd also like to point out here that for the detonator it's 20 initial damage from the flare plus another 60 damage of afterburn, making it 80 damage from any range without really aiming at all, and with the possibility of hitting multiple people at once. This goes up to 30 initial damage and 75 afterburn on minicrit making a total of 105 damage.
To put out those kinds of numbers on demoman you need to get within spam range, putting yourself at risk of being punished, and even then stickies are harder to hit than the brainless detonator spam.
I remember seeing viaduct pyro logs with 400dpm just from spamming detonator, and that is the kind of hell I don't want to return to.
PetroklosAbility to remove Stickies is a decent point, though by placing traps on walls or above doorways the Scorch Shot can't hit them, and the Detonator needs to self detonate with a correct timing to actually hit and break the Stickies. I won't go on about if it's strong or not because I'm definitely not in the skill level needed to judge this for top level competition.
Detonator does this extremely easily, and honestly the ability to remove stickies on any weapons besides hitscan is just awful.