My personal feelings is that there is a community of people that have skated by on being over-geared and/or having better DPS players pull them through DPS checks. However, in 4.0 (right now), being over-geared really isn't a thing. The onus leans even heavier on knowing what you are doing. That's causing disconnects during fights.

*stares at the phase 1 DPS check of Menagerie*