By the numbers
# number of hitters with +.300BA: STL 1 CIN 1
# number of hitters with +10HR: STL 4 CIN 6
# number of hitters with +50RBI: STL 2 CIN 3
# number of hitters with +10SB: STL 1 CIN 3
# number of pitchers with +10W: STL 2 CIN 2
# number of pitcher with +100K STL 2 CIN 0
# number of hitters with ERA <4: STL 3 CIN 2
I took a deeper look in the numbers and on the hitting side of the game the Cardinals looks like they are only getting offensive production from Pujols and their outfield where as the Reds have power across the board lead by Rolan, Gomes, and Votto. The Cardinals pitching staff has a clear advantage over the Reds but the pitchers in cincy can hold their own.
By the Schedule
CIN: ATL,PIT,CHI,STL,FLA,ARI,LA,SF,CHI,MIL,STL,COL,PIT,ARI,HOU,MIL,SD,HOU,MIL [5 vs playoff bound team]
STL: PIT,HOU,FLA,CIN,CHI,MIL,SF,PIT,WAS,HOU,CIN,MIL,ATL,CHI,SD,PIT,CHI,PIT,COL [5 vs playoff bound team]
The schedules look even mostly because these two teams are going to look like two fatsos in the diner table fighting for the morsels of the NL Central.
I've been rooting for the Cincinnati Reds this entire year and I still do, so I give the Reds the edge.