The Bombardier Challenger 604 offers a larger cabin with more width and standing height compared to the Falcon 2000, enhancing passenger comfort on long flights. It also has a greater range, allowing for longer non-stop flights. However, the Falcon 2000 is known for its superior fuel efficiency and agility, making it an excellent choice for shorter routes and accessing airports with more challenging approaches. Both aircraft excel in their respective strengths, providing luxurious and efficient travel options.