Automatic Cap Presenters specification should start with the real closure.
Automatic cap presenters are useful where operators are losing time picking and orientating caps by hand. They can also be used where the capper requires a consistent queue of closures at a fixed height or angle.
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.