Pretty much in agreement. I'd also put pretty much any skyfather level being up there out of reach as well. Their power, even if it's sometimes called magic, isn't really that.
Someone like Tayschrenn or Quick Ben from Malazan would work, though their magic, while powerful as hell (Tay could probably waste, say, the British Isles, with a cast), is somewhat less all-purpose than Strange or Fate or Samantha from Bewitched.