No, no they don't. Even the largest of typical two-handed swords might way 10lbs max, and that really is on the high end. The weight is also properly balanced across the length of the blade, not the end, and they have long handles so you can get great leverage over them.
You know that an "lb" is a pound, right? :confused:
Edit: Never mind, yeah, you're right. The two-handed swords shouldn't be hardly as difficult to swing as the two-handed axes and hammers.