This is mainly for the Exotic versus Ascended debate players who refuse to do this themselves, yet still try to claim that the difference is minimal (around 5%).
TL:DR at the bottom, all the supporting evidence is in the middle.
Some disagree with the previous analysis of the Exotic vs. Ascended so I am going to redo the analysis with a finer comb. I will not, however, add in the new bloodlust buff, as it is not constant (meaning you could be holding one orb at any given time and lose it in the middle of the fight, or gain another). I will also be ignoring all flat damage+% since all they do is scale and inflate the numbers. Since it is all multiplicative the percentage increase will remain the same.
I will be looking at extreme cases: aka lowest possible armor for each armor tier.
For ease on the eyes: 
CD=Critical Damage    P=Power   Pre=Precision  T=Toughness  V=Vitality  H=Healing Power  Con=Condition Damage  BD=Boon Duration  ConD=Condition Duration   AR=Agony Resist  
D=Damage increase by a %  CC=Critical Chance
The Thief build I will be looking at will be a D/D backstab build, 25/30/0/0/15.
I will start with listing out the base stats for the Thief (not including might/food)
Exotics:
Dagger:  921-984d    90p      64pre      5%cd     sigil:   Force + 5%d
Dagger:  921-984d    90p      64pre      5%cd     sigil:   Bloodlust 0-250p
Helm:     97 armor   45p       32pre      2%cd     Rune: Ruby Orb:  20p   14pre   2%cd
Shoulders: 97 armor  34p    24pre      2%cd     Rune: Ruby Orb:   20p   14pre  2%cd
Chest:   338 armor   101p    72pre      5%cd     Rune: Ruby Orb:   20p   14pre  2%cd
Gloves: 157 armor     34p    24pre      2%cd      Rune: Ruby Orb:   20p  14pre  2%cd
Legs:     218 armor     67p    48pre      3%cd      Rune: Ruby Orb:   20p  14pre  2%cd
Feet:     157 armor     34p     24pre     2%cd      Rune: Ruby Orb:   20p  14pre  2%cd
Amulet:    90p      64pre      5%cd      Orb: Exquisite Ruby    25p    15pre    3%
Back:         22p      16pre      1%cd      Orb: Exquisite Ruby    25p    15pre    3%
Ring 1:       67p      48pre      3%cd,     Orb: Exquisite Ruby    25p    15pre    3%
Ring 2:       67p      48pre      3%cd,     Orb: Exquisite Ruby    25p    15pre    3%
Trinket 1:  56p      40pre      3%cd     Orb: Exquisite Ruby    25p    15pre    3%
Trinket 2:  56p      40pre      3%cd,    Orb: Exquisite Ruby    25p    15pre    3%
Deadly Arts: 250p, 25% ConD 
(III) Steal does damage & heals
 (IX) Daggers do +5%d
Stealing applies poison
 Weaken target when poisoning
 +10%d if target has condition
Critical Strikes: 300pre, 30%cd 
(II) 5 might on signet use
 (III) +7%CC
 (XI) +20% damage if target <50%
+5%cc while >90% health
 critical hits have 20% chance to restore 1 initiative
 +10%d when >6 initiative
Trickery: 150Con, 15% shorter steal
 (IV) +5%d behind or beside target,
Stealing gives 3 initiative
 increase max initiative by 3
Healing Skill:  
Signet of Malice
Utility Skills: 
Assassins Signet: 180p, 
Active: Deal 15% more damage on next 5 attack
Signet of Agility: 180pre, 
Active: Refill endurance and cure 1 condition for each nearby ally
Infiltrator’s Signet: Regen 1 Initiative every 10 seconds, 
Active: Shadow step to target (stun breaker)
__________________________________________________________________
Including base values and passive signets (values in [] will not include signet passives)
Totals:  P:  2,469 [2,289] {full bloodlust without signet 2,539} Pre: 2,178 [1,998]  
T: 916     V: 916  CD: 104%    Con: 150    ConD: 25%    
CC: 76.1% [67.52]    Steal Rate: -15%  +Damage%:  35% [55% if target >50% health]
Armor: 1980  Health: 10,805
The only values that change when going from Exotic to Ascended are currently the weapon, amulet, back, rings, trinkets. Below are their values for the same Thief with the same exact set up except for the newly Ascended weapon and accessories.
Ascended:
Dagger:  970-1,030d     94p     67pre     5%cd     sigil: Force + 5%d
Dagger: 970-1,030d      94p     67pre     5%cd     sigil: Bloodlust 0-250p
Amulet:     126p      85pre     9%cd
Back:           56p       35pre     5%cd
Ring 1:       103p       68pre     8%cd
Ring 2:       103p       68pre     8%cd
Trinket 1:    91p       61pre     7%cd
Trinket 2:    91p       61pre     7%cd
__________________________________________________________________
New stats for Ascended Gear.
P:  2,539 [2,359] {full bloodlust without signet 2,609}  Pre:  2,214 [2,034]
CD:  112%
