"a bike with a certain amount of travel and at 30% sag will have the same seat angle regardless of suspension design" This isn't exactly true, since sag percentages are generally measured at the shock, not the wheel. At least in theory (maybe someone else can back me up on this), leverage ratio can have an impact on the actual wheel travel for a specific % of shock stroke. Say you have 'Bike 1' which is entirely linear, with 150mm travel and a 60mm stroke shock (average LR of 2.5), and 'Bike 2' which has the same amount of travel...