@Hyper Annon
Pablo's attacks won't work on Sans since he is a skeleton. Sans has better HAX than the Judge. Sans is also slightly faster and smarter than the judge and Sans has killed and fought beings leagues above Pablo's durability.
Sans' HAXES: Spatial Manipulation, Soul Manipulation, Gravity Manipulation, Telekinesis, Teleportation, Bone Manipulation(Won't work on a cat since it has skin ,muscle, Organs,Nerves etc protecting it's bones), 4th wall awareness and Status effect(particularly Poison damage)
The Judge's/Pablo's HAX: Biological Manipulation(won't work on Sans since he is a skeleton), Minor Soul Manipulation(won't work on Sans since he has minor Soul Manipulation resistance), Teleportation, Status effect(particularly Poison and Blindness) (this won't work on Sans since his status effect can only activate via his aneurysm and Sclerosis and that won't work cus Sans is skeleton) and 4th wall awareness.
Sans' attacks roughly deal 1 damage to a being who has large star level+ Durability. The Judge is weaker than That level of durability. Sans has also trained with his Brother and perhaps Undyne and Asgore as well. Sans has rough and beaten flowey/Omega flowey in all of this other timelines and Flowey could never get past Sans. Pablo might have the same durability as Chara/Frisk and better durability than flowey but Not as durable as Omega flowey.
Sans is Faster ,slightly Smarter than the judge and might even be more Skiled than him and He has a far better variety of attacks and HAXES in his arsenal.
Edges,
Sans: Faster, Slightly Smarter, Better HAXES, Bigger and better variety of Abilities ,Better Soul Manipulation.
Also The Judge's Aneurysms and Sclerosis won't work on Sans since he is a skeleton and His Minor Soul Manipulation won't work on Sans since Sans has Minor Soul Manipulation resistance.
Pablo/The Judge: AP, Strength, Durability and Stamina.
Also Sans' Bone Manipulations won't work on The Judge since he is a cat.
And yes you might say BUT KR WON'T WORK ON THE JUDGE SINCE HE HAS'NT COMMITED MANY SINS. First of all we are not sure what KR means it is just assumed it can mean Karmic Retribution but in can be Ketchup Revolts if we add the "ASSUMING STUPIDITY LOGIC". 2nd The Judge has Killed the Batter many times and Assuming KR means KARMA this will hurt Pablo since KR requires you to Not Kill anyone for any reason and The Judge has also committed a few Sins that will harm him in the Long run.
Sans' AP can also be considered INFINITY/INFINITE.
Yes you might be shocked but I have and explaining for it. If you hack the game and turn your HP infinite Sans' Dunk will still instantly Kill you and Insta-Kill you. So since Judge is a Nice guy he will go for the Spare option allowing him to die a swift death(this unless both are bloodlusted)
So Sans wins via FRA
Also Sans vs The Batter was stated inconclusive in this wiki so if Batter Beat the Judge/Pablo I have no doubts Sans can beat the Judge/Pablo Too