head to head
vs
Tony Hawk's UndergroundvsTrials HD
Tony Hawk's Underground leans Execution (Practiced Mastery); Trials HD leans Execution (Pure Mechanics).
Tony Hawk's UndergroundTrials HD
Axis by axis
Execution8 vs 9
Trials HD leans harder on execution: Throttle balance and weight shifts demand frame-tight physical control
Reads0 vs 0
Even - both lean on reads about the same.
Variance0 vs 0
Even - both lean on variance about the same.
Optimization6 vs 5
Tony Hawk's Underground leans harder on optimization: Mission and score-line routing remain solvable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.