Cheekpiece: The Full Cheek is valued for its steering/lateral assistance, mouth stability, and comfort, making it a popular, FEI-legal choice for young horses learning directional cues, horses needing extra straightness support, or driving horses — rather than for any leverage or "stronger" stopping power, since mechanically it functions as a direct-pressure snaffle.
Mouthpiece: The Waterford bit uses a flexible, multi-linked mouthpiece to prevent a horse from leaning or locking onto contact — distributing pressure evenly and encouraging mouthing and salivation under light rein use, while firming into a genuinely stronger, multi-point sensation under sustained heavy contact — making it a popular choice for horses that lean or pull, particularly in show jumping, eventing, and cross-country, though its variable nature means it's best introduced and used with guidance from an experienced trainer.