I dont really see why it matters. For example if you look at the meta PvE exotics for warlocks and titans, which are Phoenix protocol and Ursa furiosa, yes phoenix requires kills and ursa requires you to take damage but both are equally ridiculously strong and a literal must have cannot go without in GMs. If you look at Knucklehead radar or MK. 44 stand asides, two exotics I have literally never seen on someone's character in d2, compared to something like Karnstein armlets or crown of tempests, which one is the better exotic? Basing how strong one class is over the other by how their exotic perks are activated is just a poor representation. Every class has useful exotics and useless exotics.