just running SELECT @@VERSION does not give you an accurate detailed information, this is a bad practice and laziness.

i just installed ssms v17 and its showing me what i...

how does this matter whether its in 3 colum or 1 colum, i run this statement, 

CASE
  WHEN CONVERT(VARCHAR(128), SERVERPROPERTY ('productversion')) like '8%' THEN 'SQL2000'
 ...

that is correct, but it doesn't

MajorVersion ProductLevel Edition ProductVersion
SQL2008 R2 RTM Standard Edition (64-bit) 10.50.1617.0