Let's define 'heavy' - the 757 is, IMO, the 'heaviest' modern jetliner out there. But it's lighter than the MD-80 and 707. Maybe slightly heavier than the 727 (it's been a long time since I flew that). Part of that is the T.O. trim is set for full power, which is a lot in the 757 and has a noticeable nose up impact, but most takeoff's are done at standard/flex/assumed power. The A300 was the lightest. Small AB's probably come next followed by the 767's, than maybe the A330', then the 777's. The 737NG pitch is similar to what I recall the 727 - lighter than the 757 but heavier than the 767/777's and Airbus'. But in roll the 737NG is fairly light. All w/b's take slightly slower 'hands' (roll inputs) than n/b aircraft. It's a function of mass, wingspan, and large engines on the wings. W/B's aren't happy with rapid changes in roll rates or directions. The n/b aircraft don't shake as much when handled slightly poorly.