Hey,
No, mechatronics is not so difficult. It is a normal branch just like other branches. This branch deals with robotics , electronics,  computer and product engineering. Although its a combination of these branches but its syllabus is made such that student doesnt feel pressure in studying it.
Hope this solves your query.

Might be if u think all based on your interest and capability and also college which u choose alright good luck buddy Try to attend various entrance exam to various universities u like