They are smarter more inquisitive than BP and unlike BP it is a species that needs to be work with.
You could have a BP and never handle it for any other reason than maintenance and that BP would be fine however a carpet like many other species needs regular interaction if you want that snake to remain docile and handlelable.
They have the reputation of being nippy when young, and yes babies tend to be defensive when they hatched (like any other species really) but usually calm down in no time, some may take a little longer and some may be very laid back it really varies.
It's a great species and when it comes to handling a lot more enjoyable than BP.