When you get all aggressorcoded and start bonkmaxing frfr with the skibidi meelee no cap and crank dat DOOMja-boy and ascent to the dumbbellchad status and hit them with the “drives straight at u”-rizz with the "projectile travels along the ground "-tism
funny thing is i never see people running 3 dooms.
im wondering about their damage output with 3 of them on a hadron to compare it to fortunes.
also if your running thrust they get hard countered by bumpers funnily enough. launching it at bumpers does pitiful damage. though i did find some entertainment in launching them at plows and watching them fly in the air to comical heights both sitting still and charging full speed at them.
I actually have a tri-doom build with 130 km/h max speeds. Very fun for hit-and-run, but I prefer heavier builds most of the time. 
I have a three-Doom build in the exhibition I play with pretty often, around the 12-13k PS. I prefer running three dooms over two, just with two it just feels like I am yet another Aegis shield player mistaking having a shield and minmaxing with the usual jackie etc for skills.
In my experience they do less damage overall, but more easily. A singular projectile needed to hit the enemy will always be superior to having to hit multiple ones per volley for maximum damage output, simply out of the ease of use