Most of the test takers think TOEFL iBT is difficult than IELTS but some think differently. However, people who say TOEFL is difficulty has majority. The universities don’t count the difficulty of the test while marking their score requirement. Usually, 6 in IELTS is considered Equivalent to 80 in TOEFL.

While you take both the tests, your performance on one test may not be as good as another test. That may be because of various reasons like: difficulty of a question, anxiety level, testing environment, and experience.