Look, I'm sorry, but you keep tossing out numbers without anything actually backing them up. You ignore the fact that the PHB rogue, at level 1, can have higher damage than the thief (due to Brutal Scoundrel) and higher accuracy (due to +1 to hit and weapon talent). He doesn't have CA quite as guaranteed, but can still get it the vast, vast, vast majority of the time, and the usual elements that take it away from him (such as daze) do the same to the thief.
Prove it.
Here are my numbers:
Level 1 Human Thief
Dex(20) +5
Rogue's Trick: Acrobat's Trick, Tactical Trick
Background: Gritty Sergeant (Rapier)
Feat: Surprising Charge
Feat: Light Blade Expertise
Case A: When the Thief (and Rogue) can easily get CA then he uses Acrobat's Trick to charge.
Attack: 5 (Dex) + 3 (Prof) + 2 (CA) + 1 (Charge) + 1 (Light Blade Expertise) = 12 vs AC 15 = Miss(1-2) Hit(3-19) Crit(20)
Damage: 1d8 (Rapier) + 1d8 (Surprising Charge) + 2d6 (Sneak Attack) + 5 (Dex) + 2 (Weapon Finesse) + 2 (Acrobat's Trick) + 1 (Light Blade Expertise) = 26
Crit: 8 (Rapier) + 8 (Surprising Charge) + 12 (Sneak Attack) + 5 (Dex) + 2 (Weapon Finesse) + 2 (Acrobat's Trick) + 1 (Light Blade Expertise) = 38
DPR: 0.10*0 + 0.85*26 + 0.05*38 = 24
With a slightly lucky damage roll, he can kill an undamaged same level foe.
Case B: When the Thief (and Rogue) cannot get CA, then the Thief can almost always find a foe that he can use Tactical Trick against. The Rogue is out in the cold if he cannot get CA.
Attack: 5 (Dex) + 3 (Prof) + 2 (CA) + 1 (Charge) + 1 (Light Blade Expertise) = 12 vs AC 15 = Miss(1-2) Hit(3-19) Crit(20)
Damage: 1d8 (Rapier) + 1d8 (Surprising Charge) + 2d6 (Sneak Attack) + 5 (Dex) + 2 (Weapon Finesse) + 1 (Light Blade Expertise) = 24
Crit: 8 (Rapier) + 8 (Surprising Charge) + 12 (Sneak Attack) + 5 (Dex) + 2 (Weapon Finesse) + 1 (Light Blade Expertise) = 36
DPR: 0.10*0 + 0.85*24 + 0.05*36 = 22.2
Case C: The Thief can use Tactical Trick at Range with a dagger. The Rogue has a tough time getting CA and Sneak Attack at Range.
Attack: 5 (Dex) + 3 (Prof) + 2 (CA) + 1 (Light Blade Expertise) = 11 vs AC 15 = Miss(1-3) Hit(4-19) Crit(20)
Damage: 1d4 (Dagger) + 2d6 (Sneak Attack) + 5 (Dex) + 2 (Weapon Finesse) + 1 (Light Blade Expertise) = 17.5
Crit: 4 (Dagger) + 12 (Sneak Attack) + 5 (Dex) + 2 (Weapon Finesse) + 1 (Light Blade Expertise) = 24
DPR: 0.15*0 + 0.80*17.5 + 0.05*24 = 15.2
So yes please, show me your first level Brutal Scoundrel Rogue that can beat this Thief's DPR as you claimed in all three typical encounter cases where A) the Rogue can easily get CA, B) the Rogue cannot get CA for melee, and C) the Rogue uses a Ranged attack. Don't forget, Weapon Talent for a Rogue requires the use of a Dagger.