Based on sales alone and if not including the Wii I would say PS3 vs 360. It's back and forth and with each passing year the PS3 closes the worldwide sales gap.
Otherwise the MD vs SNES. Sega ate into Nintendo's dominant market share and though sales wise the SNES comfortably won in the end, it's worth bearing in mind near the end of that gen Sega stopped supporting the MD and all it's crappy add ons to concentrate on the Saturn while Nintendo continued to support the SNES and this helped to propel SNES sales further ahead of the MD.








