One of my good friends got a picture of a bobcat dragging a full grown doe across a foodplot last week. The bobcat had the deer by the throat.
I imagine if a bobcat can take down a deer, 2 or 3 coyotes could do it every night.
This how so many of the studies become flawed. You see the bobcat eating a deer carcass and you immediately assume the bobcat killed the deer. When it's far likely the bobcat found a dead deer and took advantage of the free meal.