I don’t know whether predicted scores matter to U.S. colleges. My daughter is in an IB school in the United States and they don’t release that info to colleges. Does your school give letter grades or calculate GPA? Ultimately if you have a choice about which report to send, I would not send the one predicting lower scores. The only U.S. colleges that I’ve come across that offer admissions conditional upon IB scores or successful completion of the diploma, are some of the U of California schools. Most colleges, including T20 schools, don’t make those a condition of admission. I hope this helps. Good luck!