As the title states, rank these DC character's detective skills in order:
Batman
Blue Beetle (Ted Kord)
Detective Chimp
Elongated Man
Martian Manhunter
Nightwing
Plastic Man
The Question (Vic Sage)
The Question (Renee Montoya)
Red Hood
Red Robin
Riddler
Sandman (Wesley Dodds)
Obviously, general consensus is Batman at #1 - comes with the territory of being dubbed the "World's Greatest Detective". And yeah, I'd say Ted qualifies as a detective.
Further more if anyone can argue someone eclipsing Batman, feel free to do so.
From what I know of each character (and some of it is vague I admit):
Batman
Detective Chimp
Blue Beetle (Ted Kord)
Riddler
The Question (Vic Sage)
Red Robin (if it's the marty stu version)
Elongated Man
Martian Manhunter
Sandman (Wesley Dodds)
The Question (Renee Montoya)
Plastic Man
Nightwing
Red Hood