There are basically two "ranges" of brake levers. Type 1 (my name, not any standard) worked -- and still worked with -- single pivots, centerpull, cantilevers, whatever else existed at the time. These are high-leverage. Type 2 levers -- again, my name -- have much higher leverage and are designed to work with V-brakes (a newer design than the previously-mentioned ones), and disc brakes. Those types of brakes have less leverage at the caliper and, as a result, need more at the lever.

The levers you're considering are what I would consider type 1. You're not changing systems, so to speak.