User blog comment:Lancer1289/Are People in Multiplayer Lacking in Intelligence?/@comment-1373755-20120729005926/@comment-5224682-20120729232812

Both of those powers increase damage to the targets that they stick to. It is not "kill-stealing" to have your TEAMMATES kill a target that takes more damage than most. Biotic Explosions won't kill the target most of the time, and using Warp on multiple targets causes them to go down faster if your TEAMMATES are using weapon-heavy classes.