Yeah. At the end of the day, they are two different cars for two different markets.

X6 is an easy choice for those who don't need as much ultility. Definitely don't need to transports more than 4 people. Want the front visibility of an SUV, while a drive similar to a car.

X5 is a the choice for those who need the extra ultility. Need to transport 5-7 people. And a very sporty (though not a car like drive) SUV.