The same cumulative stability to 25 degrees of heel will give you less initial stability and more secondary stability in a hard-chine hull compared to a round bottom hull. A designer can trade the efficiency of a multi-chine hull for more stability instead of more speed. If I hold the wetted surface, LWL, and keel profile constant, the boats will possess the same cruising speed, top speed, and upright turning radius, but the hard-chine boat will have less stability. A skilled designer can design excellent craft in either category. In general, if the two designs are similar in other respects, multi-chine boats, with more efficient hulls can be either quicker or more stable.
Folks looking for speed often pick a multi-chine hull.
For paddlers who like the performance and feel of hard-chine boats they are the right choice. Last but not least, between boats of similar performance, paddlers often let aesthetic preferences finalize the decision. Length Over All Osprey-Std.