I think Neverreap is clearly easier than Fractal. I passed at first try with just over entry ilvl and no problems. Fractal is much harder for a low ilvl tank.

It's different if you go with a group than in Duty Finder. Just now I prefer to get Neverreap. Fractal is much riskier for Duty Finder. Probably it won't take long for people to have much better gear and more experience and things will change.