Against steelix I got really lucky, it missed a stone edge that would've killed arcanine letting it 2 shot it with flamethrower.
As for abra... my spiritomb 1 shot it with sucker punch and a dark gem...
Personally I felt they were pretty easy thought it would really depend on team comp, a person with a lot of plysical attackers will struggle with steelix while people without ghosts, steel, or sucker punch will have a lot harder time with abra.