I have not hear those exact models but can compare those brands older models in that time frame.
Speaking generally the wilson has a bit more bass impact, as in the leading edge of drums hits. The focals are a touch more “round” in their bass tuning, strong but more defused with a touch less definition.
the highs on the older wilson’s are so so. They are using a focal tweeters and focal alway kept the best tweeters for themselves. I found the older wilson ok in the treble but I know a lot of people hate them.
I can’t speak to the mids. I have always thought both brands had good mids.
new wilson are much more refined on the top end but kept the bass slam. New focals have gotten a lot smoother with less of a “V” shape tuning and are more or less flat on axis.
