T-SQL MSSQL Cursor performance

I was comparing the performance of different cursors in MS SQL

I was working with about 4 million rows in the following example


FORWARD_ONLY STATIC READ_ONLY
Apr 23 2015  4:50PM
CURSOR OPENED
Apr 23 2015  4:53PM
LOOP FINISHED
Apr 23 2015  4:53PM
DEALLALLOCATED
Apr 23 2015  4:53PM

FORWARD_ONLY FAST_FORWARD READ_ONLY
Apr 23 2015  4:53PM
CURSOR OPENED
Apr 23 2015  4:59PM
LOOP FINISHED
Apr 23 2015  4:59PM
DEALLALLOCATED
Apr 23 2015  4:59PM

FORWARD_ONLY KEYSET READ_ONLY
Apr 23 2015  5:00PM
CURSOR OPENED
Apr 23 2015  5:10PM
LOOP FINISHED
Apr 23 2015  5:10PM
DEALLALLOCATED
Apr 23 2015  5:10PM

FORWARD_ONLY DYNAMIC READ_ONLY
Apr 23 2015  5:10PM
CURSOR OPENED
Apr 23 2015  5:16PM
LOOP FINISHED
Apr 23 2015  5:16PM
DEALLALLOCATED