For all I know, it could be the person you mention, I don't know him.
The only revelant number is on the upper right of the GPS and it is correct.
The aircraft is an upgraded Lear 35, with several performance packages. The picture shows us decending at about 1200 feet per minute from a previous altitude of 34,000 feet. The aircraft belongs to the pilot who has had it for the last 15 years or so.