Weekly T12 Armor
What is Tier 12?
Tier 12 is any combination of 2 maxed stats (Tier 5) (Intellect/Discipline/Strength) and 1 stat that is Tier 2. (Also you can have all stats at Tier 4 and this still classifies as Tier 12).

Each Stat (Int, Disc, Str) has a possible total number of 300. Anything over that is a waste of stats.

The max points you can have total is 743 (All stats added together from Helmets, Chest Armor etc...).

The max we can use right now is 720 (Tier 12).

With this being said, the actual minimum % for Tier 12 is 96.9% (720/743). I list 96% and above because you can still obtain Tier 12 with 96% because of stat distribution.
TIER COOLDOWN
Intellect (Super cooldown time)
Subclasses with Super A:

Defender

Nightstalker

Striker

Sunsinger
All other subclasses use the Super B cooldown times.
Discipline (Grenade cooldown time)
All subclasses share the same Standard cooldown time for grenades.
Strength (Melee cooldown time)
All subclasses share the same Standard cooldown time for their melee.
For the exception of the following classes, that use the Slow Melee cooldown time:

Nightstalker

Gunslinger
HOW TO GET %
First, what numbers are we looking for?
How to get the info:
Let's use this for an example

We will add these two to get the total: 60/85 + 57/82 or 85+57=142. Pick the highest number on one stat (85) and add the lowest number on the other stat (57).

Since the max for Chest Armor is 147, we will use this equation 142/147=96.59 or 96% (round down to use the low end to be safe stat wise for T12 builds).