That's just insane. It's hard to know if it was as bad as Andrew or not, but it was close.
The pressure was similar, if not lower. The wind speeds seemed a bit lower than Andrew, though Michael was bigger. Of course the impact of the bigger size was lessened by the fact that aside from Mexico Beach, it was an extremely populated area.
There are a number of standing homes still, but post-Andrew building codes are likely responsible for that. I'd bet anything that was built before 1992 was completely wiped out.