Comparing swords on how you can handle each of them is a tricky number. A slight difference in thickness along the whole blade makes a hell of a difference in weight. On the other hand, a sword being large is not necessarily heavy ... contrary to what many think. Still a sword with a rather long blade may be easy to handle when we mock fence with it but, in true combat, we would find ourselves not pondering on the correct distance bwteen us and our foe; even (fighting) space can be an issue.
I have a rapier (estoc like) with a 107 cms. blade, measuring 128 cms. in total. Extremely thin (13X8m/m), it weighs 810 grams. When i handle it, if feels like a feather weigth. But i would certainly not know what to do with such a long thing in a one versus one fight. This is why a determined type of swords require (school) training.
Note, i am no fencer nor swordsman. So don't pay much attention to what i say
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