glances depend on positioning, 1h swings (especially longer swords) have tight sweetspots and if you land a blow outside them you will glance. High damage (PS, speed, some WPF) can widen the sweetspots a bit by increasing your marginal areas.
Right swing (forehand swing) and stab are trickiest in terms of sweetspot and glance easiest, overhead doesn't glance much but is hard to use at close range cuz of turn nerf, left swing (backhand) has best sweetspots, almost no glance areas. So newer 1h should probably be left swinging 90% of time (mix it up by holding swings, or feinting to throw people off). Like I said longer swords (100+ length) like Knightly arming or Nordic champ actually glance more cuz they have tighter sweetspots, in a lot of ways 90 or so length ones like Italian sword and Nordic war sword are easier to use. Or just use a 3 directional weapon like a cleaver, axe or military hammer cuz stab is pretty difficult to use also.