head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Practiced Mastery
A customizable Jedi action game centered on deep lightsaber combat.

Execution · Practiced Mastery
A cover-shooter Rainbow Six blending tactical room-clearing with solid gunplay.
Star Wars Jedi Knight: Jedi Academy leans Execution (Practiced Mastery); Tom Clancy's Rainbow Six: Vegas 2 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Star Wars Jedi Knight: Jedi Academy
Saber acrobatics and timing dominate combat
Tom Clancy's Rainbow Six: Vegas 2
Cover-based gunfights still punish poor aim
Tom Clancy's Rainbow Six: Vegas 2 leans a little harder on reads, though the gap is small.
Star Wars Jedi Knight: Jedi Academy
Long-lived MP dueling scene adds human mindgames
Tom Clancy's Rainbow Six: Vegas 2
Multiplayer brings some human adaptation; AI is scripted
Tom Clancy's Rainbow Six: Vegas 2 leans a little harder on variance, though the gap is small.
Star Wars Jedi Knight: Jedi Academy
Mission order choice, otherwise fixed content
Tom Clancy's Rainbow Six: Vegas 2
Enemy placements partially unknown per encounter
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Star Wars Jedi Knight: Jedi Academy
Saber styles and Force builds reward mastery
Tom Clancy's Rainbow Six: Vegas 2
Room-clearing order and squad commands are solvable tactics
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.
full breakdown
Star Wars Jedi Knight: Jedi Academy →
full breakdown
Tom Clancy's Rainbow Six: Vegas 2 →