"With a high skill ceiling character, as you increase in skill, your effectiveness with that character increases."
"With a low skill ceiling character, as you increase in skill, your effectiveness is capped (and can't go higher)."
"With a low skill floor character, as you decrease in skill, your effectiveness with that character decreases."
"With a high skill floor character, as you decrease in skill, your effectiveness is capped (and can't go lower)."