I can certainly see why you would come to this conclusion. Sisti as the unfortunate bandido who draws the wrong card 
in this top notch spaghetti.
I take it Giancarlo Sisti is the preferred name and Gazzara the alias?
Ennio Pagliani is also credited in Death Rides a Horse. The only unknown actor to me that I can find in both is Clem in Bandidos and Meceita in DRaH.
Is it for certain that Walter Giulangeli is Mr Meceita or can this be Ennio Pagliani?