I think you should go with blender for animating since it has more features and its more complete!
About the other software called “Qubicle”, I havent heard about it before, but if you can split the parts with a software that is free, then why would you purchase another software to do exactly the same!
Thank you, I thought about qubicle because if unity was better or easiest for game animations I could save time by switching software, but I will stick with blender