Heavy cavalry charges could shatter much larger light cavalry forces.

Evidence

The hot fight at Warnsfeld which we remember for the death of Philip Sidney was remembered by soldiers in the Netherlands as a demonstration that armoured men on heavy horses charging home with lance at rest could break through, bowl over or brush aside many times their number of light horsemen and pistoleers. — Garrett Mattingly, The Defeat of the Spanish Armada, 106

Categorization

• corroborated: 2 independent passages support this claim — Garrett Mattingly, The Defeat of the Spanish Armada, 106