Gentle Cap Handling specification should start with the real closure.
Some caps have finishes, foils, embossing or soft-touch surfaces that can mark if they are over-agitated. Gentle handling requires attention to hopper surfaces, drop heights, bowl tooling and the amount of recirculation.
For a better buying decision, the useful comparison is not only hopper size or headline speed. It is how the feeder behaves with your closure, how the capper receives the cap and how easy the line is to run after changeover.
The safest specification route is to start with real closures, target output, line photos and the exact point where the cap must be presented. That avoids choosing a feeder on a generic speed figure that does not match the cap or capper.