When I scroll through the FreeRepublic index page. Chrome and Opera seem faster than Firefox, which seems faster than Internet Explorer.
Scrolling speed through a page has nothing at all to do with the browser engine. It has more to do with your hand speed than anything else. Different programs have different “lengths” of a single tick on the mouse wheel. “Speed” in a browser is determined by many different things. One of those is how much bandwidth the browser will allow at any one time. FF is by far the superior browser because you can edit such things as this.