Corlist's Table of all heavy melee vs defences

Everybody
100% vs health

Human Soldier/Engineer/Sentinel/Infiltrator/
Vanguard/Drell/Krogan/Batarian/Turian/
Vorcha/Salarian/Quarian male/Quarian female/N7 Paladin**
Armiger Turian/Volus/AIU

75% vs armour
100% vs shields
100% vs barriers

**N7 Paladin melee has complex mechanics, see here for more details.

Phoenix/ Asari/ Human Adept/ N7 Destroyer/ N7 Demolisher/ Geth/ Collector (light melee)
150% vs armour
150% vs shields
150% vs barriers

N7 Slayer/ Shadow/ Warlord* /Cabal /Talon** /Collector (heavy melee)
100% vs armour
100% vs barriers
100% vs shields

*See here for Warlord stuff
**See here for more Talon stuff

N7 Fury
100% vs armour
150% vs shields
150% vs barriers

Geth Juggernaut
100% vs armour
200% vs shields
200% vs barriers

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All light melees for any character (except the collector) do 100% to all defenses.

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