In the Chartered Accountancy course, you cannot definitively say that one group is easier or tougher than the other. Whether you are going for Group 1 or Group 2, what truly matters is having a clear process that can make any group manageable.
Firstly, complete your syllabus as soon as possible (you can consider recorded classes for flexibility). Then, focus on consistent practice. Use study material that includes ICAI questions, previous years' questions, and other relevant practice problems. Toward the end, make sure to solve all the Revision Test Papers (RTPs) and Mock Test Papers.
By following this approach, you can easily pass a single group or even have a good chance of clearing both groups in the same attempt.