An effective protector must never fail catastrophically. If a Leviton protector was 50,000 amps, then your venue requires a 100,000 amp protector. Effective protectors never take the brunt of or even 'absorb' a significant amount of a surge. Less energy 'absorbed' by a protector means a better protector. Protector must be sized so that near zero energy is absorbed by a protector. Earth ground must be sufficient or upgraded so that almost all energy is 'absorbed' there.