I am not clear on what you mean, so the best I can do is take a wild guess.
"If all of the features are equally weighted, then when the values of the features are nearly the same there is the possibility of error in differentiating between the features".
Provide a context and a more thorough explanation of your meaning, and perhaps we can help you more successfully.
P.S. Expect someone to talk to you about your thread title.
Student or Learner