There is no transplant for Crohn's disease. (The large intestine is never transplanted since you can live without it. The small intestine can be transplanted, but it does not cure Crohn's disease).
Hearts, liver, kidneys, lungs, small intestine, pancreas, corneas, heart valves. Some other things have been transplanted (both successfully and unsuccessfully), but typically only "life saving"...
One is not "better" than the other - they will both perform exactly the same as a non transplanted heart or lungs. Neither will make the patient bionic or superhuman. A patient with heart failure...