I just had Battle Roads yesterday and I saw the records
Average deck finishes, 63 players, 6 rounds. (Metagame decks only)
(3)EmpoleRade with Terrakion: 3-3 (Not enough Late-game to survive much)
(7)Garbodor/Attackers: 2-4 (Tool Scrappers galore, every deck had two and just walked over Garby)
(12)Darkrai/Hydregion: 4-2 (lots of speed, but it really depends on your tech line)
(16)RayEels:4-2 (Speed, Power, and Dominated by a T2 Darkrai)
(8)Ho-oh/Mewtwo and Ho-oh/Terrakion: 4-2 and 3-3 (Really just depends on getting a T1 Ho-oh EX)
(4)Terrakion EX/Mewtwo EX: 4-2 (Terrakion NV FTW!)
(2)Darkrai/Tornadus/Bouffalant: 5-1 (3 DONKS!)
(1)Darkrai/Mewtwo/Terrakion: 5-1 (One Darkrai Donk and one Terrakion Donk)
Now, the problem D/T/B and D/M/T, are that they never made it past five minutes, so I never saw the late-game play, it was always over before the opponent got set up. Now that being said, round six one of the D/T/B decks beat D/M/T simply because of Tornadus, but I have a feeling that if you don't Donk or at least crash their setup, D/T/B becomes very hard to play late game. One D/T/B got donked because of starting with Sableye, opponent got a T1 Ho-oh EX with 4 Energy on him. The other got slammed by an early Mewtwo EX, then finished the game three turns later with a double Energy Switch onto Terrakion EX with Eviolite.