JFT is way more easier than JLPT-N4 from students point of view.
Because of Following Reasons:-1. JFT Exam has passmarks above 80% while JLPT-N4 Exam have above 50%. You will have higher chances to pass Exam is geater in JFT Exam.
2.JFT open once in every two month while JLPT opens twice a year. The probalilty to pass in JFT exam is high.