* Individual learning styles: A student might find one system's approach easier to grasp than the other.
* Teaching methods: Effective teaching can make a challenging syllabus seem manageable.
* Assessment style: The way each board assesses students (exams, projects, etc.) can influence perceived difficulty.
* Specific subjects: Some subjects might be presented more simply in one board than the other. For instance, one might introduce a concept earlier or explain it differently.
Generally, the CBSE curriculum at Class 5 is considered more comprehensive and potentially covers a broader range of topics. However, the ICSE curriculum might delve deeper into specific concepts within a narrower scope. The difference is often subtle at this level.
Ultimately, the "easier" syllabus is subjective and depends heavily on the individual student and their learning preferences.