The Mech
The Fantasia 2R-E had difficulty catching his much lighter opponent, who happened to be piloting a Fantasia 1R.
As the predecessor model, the 1R lagged in several areas compared to the 2R. Nonetheless, the 1R the opponent piloted was the stock model, granted him a decisive advantage in agility and short-ranged mobility.
The forest environment also bogged Shifter66 down. His 2R-E couldn't find a clearing to put his substantial boosters to good use. Without the extra speed afforded by the boosters, his 2R-E had been rendered into an overweight mech, clumsily trying to turn its sluggish frame in the direction of his flitting opponent.