I live in the Marina, close to the Palm. I can drive to DXB airport in 30 minutes, AUH my record is under 45 but that's not recommended

I would usually leave an hour, maybe 90 minutes to be safe though.
FWIW I've taken EY more than a few times, and if I were living in Abu Dhabi I wouldn't hesitate recommending them. But EK is more convenient for someone living in Dubai, and the route network is better.