I have two early seventies TdF's. Of the forty odd bikes I own(admittedly, mostly sixties vintage Schwinn "lightweights", but including two Paramounts), these are my favorite to ride. They have a very sweet and responsive feel to them.

Not sure about other years, but in the early seventies, the Super Corsa was Gitane's top of the line model. It was all Campy equipped. I've never had the pleasure of riding one, but I'd bet it doesn't ride any better than the TdF. In the catalog, the TdF is listed as half a pound lighter than the Super Corsa.

I'd keep it and fix it up as a rider if I were you. As Poguemahone said, the French threading and sizes will be an issue, but I think you will be pleased with the way it rides.