Here's some data. The first two lists show the winners of the ten most recent editions of the two big Tour de France "tune up" races. For each rider, I've listed their finishing GC position (if any) of that year's TdF.
Below that, I've listed the podium finishers of record of the last five Tours. On that list, I've amended each name with their finishing place on GC of whichever (if either) of the two tune up races they completed.
The Criterium du Dauphine has, over this period, been where the more successful Tour riders have prepared. In fact, if you throw out the Schlecks, the Tour de Suisse looks positively anemic by comparison. I also noticed, looking back over the whole 21st century, that the Criterium has been a very anglophone race in term of its podium finishers, though of course there are complicating factors to that that we can't discuss here.
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Criterium du Dauphine Winner (same year TdF finish)
2013 Christopher Froome | 1st
2012 Bradley Wiggins | 1st
2011 Bradley Wiggins | N/A
2010 Janez Brajkovič | 42nd
2009 Alejandro Valverde | N/A
2008 Alejandro Valverde | 8th
2007 Christophe Moreau | 37th
2006 Levi Leipheimer | 12th
2005 Inigo Landaluze | 100th
2004 Iban Mayo | N/A
Tour de Suisse Winner (same year TdF finish)
2013 Rui Costa | 27th
2012 Rui Costa | 18th
2011 Levi Leipheimer | 31st
2010 Frank Schleck | N/A
2009 Fabian Cancellara | 89th
2008 Roman Kreuziger | 12th
2007 Vladimir Karpets | 14th
2006 Jan Ullrich | N/A
2005 Aitor Gonzalez | N/A
2004 Jan Ullrich | 4th
Now the TdF Podiums for the last three years, with the particulars of their placements in whichever (if either) of the two races they finished.
2013
Christopher Froome | 1st at the Criterium du Dauphine
Nairo Quintana | N/A
Joaquim Rodriguez | 16th at the Criterium du Dauphine
2012
Bradley Wiggins | 1st at the Criterium du Dauphine
Christopher Froome | 4th at the Criterium du Dauphine
Vincenzo Nibali | 28th at the Criterium du Dauphine
2011
Cadel Evans | 2nd at the Criterium du Dauphine
Andy Schleck | 19th at the Tour de Suisse
Frenk Schleck | 7th at the Tour de Suisse
2010
Andy Schleck | 14th at the Tour de Suisse
Denis Menchov | 25th at the Criterium du Dauphine
Samuel Sanchez | 18th at the Criterium du Dauphine
2009
Alberto Contador | 3rd at the Criterium du Dauphine
Andy Schleck | 24th at the Tour de Suisse
Bradley Wiggins | N/A
Edited for diacritical reasons! Can't do anything about the thread title, sorry!
Below that, I've listed the podium finishers of record of the last five Tours. On that list, I've amended each name with their finishing place on GC of whichever (if either) of the two tune up races they completed.
The Criterium du Dauphine has, over this period, been where the more successful Tour riders have prepared. In fact, if you throw out the Schlecks, the Tour de Suisse looks positively anemic by comparison. I also noticed, looking back over the whole 21st century, that the Criterium has been a very anglophone race in term of its podium finishers, though of course there are complicating factors to that that we can't discuss here.
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Criterium du Dauphine Winner (same year TdF finish)
2013 Christopher Froome | 1st
2012 Bradley Wiggins | 1st
2011 Bradley Wiggins | N/A
2010 Janez Brajkovič | 42nd
2009 Alejandro Valverde | N/A
2008 Alejandro Valverde | 8th
2007 Christophe Moreau | 37th
2006 Levi Leipheimer | 12th
2005 Inigo Landaluze | 100th
2004 Iban Mayo | N/A
Tour de Suisse Winner (same year TdF finish)
2013 Rui Costa | 27th
2012 Rui Costa | 18th
2011 Levi Leipheimer | 31st
2010 Frank Schleck | N/A
2009 Fabian Cancellara | 89th
2008 Roman Kreuziger | 12th
2007 Vladimir Karpets | 14th
2006 Jan Ullrich | N/A
2005 Aitor Gonzalez | N/A
2004 Jan Ullrich | 4th
Now the TdF Podiums for the last three years, with the particulars of their placements in whichever (if either) of the two races they finished.
2013
Christopher Froome | 1st at the Criterium du Dauphine
Nairo Quintana | N/A
Joaquim Rodriguez | 16th at the Criterium du Dauphine
2012
Bradley Wiggins | 1st at the Criterium du Dauphine
Christopher Froome | 4th at the Criterium du Dauphine
Vincenzo Nibali | 28th at the Criterium du Dauphine
2011
Cadel Evans | 2nd at the Criterium du Dauphine
Andy Schleck | 19th at the Tour de Suisse
Frenk Schleck | 7th at the Tour de Suisse
2010
Andy Schleck | 14th at the Tour de Suisse
Denis Menchov | 25th at the Criterium du Dauphine
Samuel Sanchez | 18th at the Criterium du Dauphine
2009
Alberto Contador | 3rd at the Criterium du Dauphine
Andy Schleck | 24th at the Tour de Suisse
Bradley Wiggins | N/A
Edited for diacritical reasons! Can't do anything about the thread title, sorry!