It's not 574% defense. It's better. Because the 200% in game applies to the new base after factoring in the actual base, the mods, and 374% on the cron.
My 7th sister has an in game armor value of 63.4%(11.6%). This means her base armor (before mods) is about 51.8%. This translates to ~685 defense. With my mods, it's about ~1,104 defense. Multiplying the base by 4.7407 and adding the 419 from my mods yields a new defense value of ~3,667, or something like 85.2% armor. These are the new base values to be used by the 200% calculation. When fully stacked, 3,667 * 3 = 11,001 defense or about 94.52% armor.
So, this datacron, when stacked, will have increased her armor from 1,104 to 11,001, nearly a full factor of 10 and she would have gone from taking 36.6% damage from a hit to only taking 5.48% damage from a hit. When fully stacked, my 7th sister would be ~6-7x thicker.
If I'm wrong anywhere, let me know.
