Also the current service Tu-95MS were all built in the 1980s and early 90s, while the last B-52 came off the line in 1962. Which is ancient?
The first B-52 (Serial Number 52-8711) was delivered to SAC on 29 June 1955.
The last B-52 (Serial Number 61-0040) was delivered to SAC on 26 October 1962.
So the BUFF is an old airplane.