I do both bio and chem this year, I feel that biology has a much larger workload though easier to get an A+ since the cutoff is lower. Chem on the otherhand, is more about perfection and understanding concepts perfectly and making no mistakes.
No biology is not very rote learning-ish, it used to be, but the new course has quite alot of application questions where you understand a concept and you apply it. The concepts are much easier, to understand but the reason I saw biology has a larger workload is that it covers a large range of topics, and if one was go into full depth into each study design dotpoint it will be, a larger workload, than chemistry.
This is just my opinion, btw I did get A+ for both mid year exams and worked much harder for biology then chemistry. I probably did twice as many past papers for biology, whilst chemistry's difficulties were gone once the concepts "clicked".