A difference between good and poor comprehenders is that when they encounter a word with multiple meanings:

Good comprehenders initially activate all possible meanings of the word, but poor comprehenders do not. Poor comprehenders guess at one mearing only.

Good and poor comprehenders initially guess at one meaning only. Good comprehenders are better guessers than poor comprehenders, so they are more libely to be right.

Poor comprehenders initully activate al possitle meanings of the word, but good comprehenders do not. Good comprehenders suess at one meanint only

Good and pose comprebenders initially activate all posible word meanings. Good comgrehenders then pick one mearing and suppress the others. Poor compethders do not select one meaning.