Also, it's a small difference and not even on the front cover, but there
is a very slight difference in the details of the
back covers between the NTSC-U/C (USA) and PAL (GBR) of the original SmackDown! vs. RAW game.

USA, where an example of a created championship just sits there on the design screen, nothing special. Also, Stacy and Torrie are shown in just their bras.

PAL version, where instead of just the created "Smoking Skull" championship sitting on the design screen, Shawn Michaels is shown during his entrance (at SummerSlam 2004) in the game wearing it. Also, Stacy and Torrie are fully clothed. Poor form.
Just thought I'd point that out while we were comparing past differences in old cover art for the games.