head to head
Armored Core: Project PhantasmavsTom Clancy's Rainbow Six: Vegas 2
Armored Core: Project Phantasma leans Execution (Practiced Mastery); Tom Clancy's Rainbow Six: Vegas 2 leans Execution (Practiced Mastery).
Armored Core: Project PhantasmaTom Clancy's Rainbow Six: Vegas 2
Axis by axis
Execution7 vs 7
Even - both lean on execution about the same.
Reads3 vs 3
Even - both lean on reads about the same.
Variance2 vs 3
Tom Clancy's Rainbow Six: Vegas 2 leans harder on variance: Enemy placements partially unknown per encounter
Optimization7 vs 6
Armored Core: Project Phantasma leans harder on optimization: Mech build crafting and part tuning define competitiveness
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

