I even installed a modchip on my french Snes to switch from 50/60hz whenever I needed to.
50hz has 17% slowdown, and blackborder up and down, like a forcing 16/9 (image is shrink, or stretch), but it's not even a real 16/9.
it's not even 480 lines on a 576 tv display, otherwise the image wouldn't be deformed.
(correct me if I'm wrong)
I would like also more information about VC games at 50Hz
I will wait for your help.
Edit for Digeman >
NTSC Games are in 60Hz, full speed full screen in japan and USA
PAL Games were, and are still for some game, released in 50Hz, 17%slower than NTSC version, and with black border top and bottom of TV.
I can't stand playing PAL release when they are not optimized for PAL territory.
I turn to play USA import for almost 10-15 years now, and english is a lot better than crappy french translations