The Catch is basically heavy damage. If he takes a Moderate/Severe/Extreme physical consequence his Catch is met (I got the idea from the Witcher character MijRai originally posted in the character thread). Yes it counts for Supernatural Toughness, the idea is that his armor is "boosting" his toughness (given its well the finest armor available in the 40th millennium).
Ok, let my try to understand this.
With Supernatural Toughness:
OOOO(OOOO) - Armor 2
Now we force him to take a Moderate Consequence, we do that with a 14 stress hit.
14 stress - Armor:2 - Moderate Consequence:4 = 8'th box filled
Oh, wait, now the catch is met.
+2 Stress because the armor doesn't count
that would mean the 10th box is filled
Well, now you need to take a severe consequence as well, because the extra stress boxes don't count, and then fill the 4th box
Somehow this is totally backwards.
Catch satisfaction is supposed to be determined before stress is calculated.
Also, the toughness itself is working against the catch satisfaction. If the Armor reduces the damage enough to avoid a moderate consequence, the catch that would penetrate said armor is not satisfied.
Add to that this characters extremely high Armor value (which i feel should be paid for with refresh btw.) and it's a catch that will barely ever be satisfied.
The Point of having a catch is to make it possible for characters that do not dish out those high stress hits to circumvent high toughness.
If you have to overcome the toughness first before you can circumvent it... well, i think that defeats the purpose of a catch.