It’s obviously hard to say how much you will receive in IELTS, but I can say this: it is slightly tougher than TOEFL. Most people who come to the US (including me) have given TOEFL to get here, and that was a cakewalk then. I gave IELTS last year to go through the EE process and I’ll be hones: even after spending 7 years here using English in daily life, I felt TOEFL was much easier. I felt that this is mostly because IELTS has 4 sections (Listening, Reading, Writing, and Speaking - one on one). So it’s longer. Also, I felt that the reading (comprehension) was not as easy as other sections; you not only need good English, but also good aptitude/comprehension to answer some of the questions. Personal interview can also be a challenge if your spoken English is not good. All in all, I would say don’t take IELTS lightly. You know your English ability and if you’re confident, IELTS can be a cakewalk as well. If not, then you need some practice (there are free practice tests online).