If you were diving without dry gloves, it wouldn't be unusual to get some moisture in through the wrist seals and have damp wrists and forearms at the end of the dive, especially if you were using your hands very much.
A L/XL is the perfect size Fusion for you. The question is whether the seals were cut properly or not, or whether they are too big. You should not have sloshing water in the suit anywhere, ever. Undergarments should feel damp on the outside, but just the kind of damp clothes have when you didn't run the dryer quite long enough. If you can wring water out of any part, you have a leak.
A L/XL is the perfect size Fusion for you. The question is whether the seals were cut properly or not, or whether they are too big. You should not have sloshing water in the suit anywhere, ever. Undergarments should feel damp on the outside, but just the kind of damp clothes have when you didn't run the dryer quite long enough. If you can wring water out of any part, you have a leak.