You are correct (Destiny)

by Durandal, Thursday, October 19, 2017, 11:51 (2394 days ago) @ yakaman

D2 has slower ability times (barring mods), and intentionally removed all the one hit kill abilities outside of power weapons.

This has led to some changes in the crucible:

As OHK ability are gone, team shooting is essential to out play others.
It's easier to team shoot from long range (scout rifles).

Trying to close is difficult, as the payoff in reduced TTK from sidearms/submachine guns (the lowest TTK weapons) won't overcome the disadvantage of taking fire on the way in.

Using a roaming super is easy to counter, as you can move faster then any bar the Striker titan.

So the game right now encourages players to stay mid/long range, and if taking fire to back off and regen. Trying to close is very risky and difficult, since you cannot do so as a group and there are no one shot weapons that can quickly eliminate a group.

Warlocks and Titans are well set to take advantage of this, as they have very good health regen and abilities that complement holding positions. Hunters can leave an engagement, but that doesn't help in objective based modes. Add that running is the same no matter your agility, and now you have a situation where the canny player are engaging in long range team shot firefights.