Right well my original plan didn't work, but I've still got a feeling it could work somehow.
1) Enter a USB stick into your PS3.
2) On the PS3 home menu go to "Game" and select "Saved Game Utility".
3) Find your PES replay and press :triangle: then select "copy". Copy it onto your USB stick.
4) Remove your USB stick and insert it into your PC. Go through all the folders until you go into the last one.
Now here's the problem. I believe the first file, "DATA", is the reply, but it won't play on Windows Media Player or any other media player. I even downloaded VLC Media Player as it says it is a VLC Media File, but that won't play it either.
I googled ".bin" files and apparently you need something like a CD/DVD Emulator, but I'm not prepared to go any further into this. Feel free to carry on with this & I wish you good luck. If one of you does solve it then please message me how.
Sorry guys, I tried