Flames of War is a far better thought out game than 40k, yeah, and it even still has 3+ saves! Flames of War's defensive fire mechanic, which 40k's overwatch(in the current edition) is based off of is a far better designed mechanic because it's something both players interact with- setting up machine guns in the right spot to support a defensive position, preparing the position by firing smoke and suppressing, etc.
Honestly though the best GW game is probably Epic 40k because not only is it better designed, it fits a lot better than trying to shove more 28mm men and bigger things onto the same table.
