The only difference is a Dunmer gets 40 endurance whereas Argonian gets a mere 30. Argonian males are better at agility getting 50 whereas Dunmer get 40 (an Argonian female only get 40)
1. Both Dunmer & Argonians have the same weakness in Willpower & Personality with both at the lowest setting of 30 (an Argonian female gets 40).
Dunmer gets a +10 Destruction making it 40 but then why would someone choose destruction when they are better suited with blade and bow.
Argonian get a +5 illusion yet most of Illusion spells can be made up for through high sneak.
2. Both get 50 speed (two of the fastest races)
Dunmer get +5 athletics where as Argonians get +10. Dunmer get additional +5 light armor.
3. Both get 40 Strength
Dunmer get +10 Blade & +5 Blunt, Argonian get +5 Blade & +5 H2H
4. Both get 40 Intelligence with +5 for Alchemy & Mysticism
5. Argonian 50 Agility & Dunmer 40 Agility
Dunmer get +5 marksmen making it 45.
Argonian get +10 security making it 60.
So both are suited as a Light Armored, Blade wielding, bow shooting warrior backed up with potion making and sneaking around.
Khajiit is also similar but isn't so high in speed but also isn't so low in Personality. Wood Elf are similar but lacks in Strength.
Who is the better of the two?