Is IB math the hardest?

I've heard some students say that IB math is incredibly challenging, while others claim it's manageable. So, is IB math really the hardest subject out there? I mean, it's known for its rigorous curriculum and high standards, but is it really more difficult than, say, physics or chemistry? I'm curious to know your thoughts. Do you think IB math deserves its reputation as being the toughest subject, or is it just a matter of perspective and individual strengths?