Well, I can't be ****ed working just yet, and I like to throw some useless stats around, so here's the respective teams' performances against Top 8 teams in 2011.
Warriors
lost to Tigers 20-12 (R2 away)
lost to Dragons 25-12 (R3 home)
lost to Manly 20-10 (R6 away)
def Melbourne 18-14 (R7 away)
def Newcastle 25-16 (R10 away)
lost to Tigers 26-22 (R14 home)
lost to Cowboys 30-10 (R15 away)
lost to Melbourne 16-8 (R16 home)
lost to Broncos 21-20 (R22 away)
def Newcastle 20-12 (R23 home)
lost to Dragons 26-22 (R25 away)
def Cowboys 18-6 (R26 home)
Record: Won 4, lost 8
Ranks beaten: 1, 7, 8 (twice)
Ranks lost to: 1, 2, 3, 4 (twice), 5 (twice), 7
Away: Won 2, lost 5
Home: Won 2, lost 3
Last 7 rounds: Won 2 (7, 8) lost 2 (3, 5)
Broncos
lost to Cowboys 16-14 (R1 home)
def Newcastle 17-6 (R5 home)
def Tigers 31-18 (R7 away)
lost to Melbourne 29-22 (R9 home)
lost to Manly 34-10 (R12 away*)
def Dragons 21-14 (R15 home)
lost to Melbourne 26-6 (R20 away)
def Warriors 21-20 (R22 home)
def Cowboys 34-16 (R23 away)
def Knights 26-6 (R24 away)
def Manly 18-10 (R26 home)
Record: Won 7, lost 4
Ranks beaten: 2, 4, 5, 6, 7, 8 (twice)
Ranks lost to: 1 (twice), 2, 7
Away: Won 3, lost 2* (including one "away" game at Suncorp)
Home: Won 4, lost 2
Last 7 rounds: Won 4 (2, 6, 7, 8), lost 1 (1)
Conclusion
Either the Broncos or Warriors will win this week...