What I am missing?

I thought that status from sys.dm_exec_requests should match to status from sp_who2, and they are not?

SELECT

a.scheduler_id ,

b.session_id,

c.status,

start_time,

(SELECT TOP 1 SUBSTRING(s2.text,statement_start_offset / 2+1 ,

( (CASE WHEN statement_end_offset = -1

THEN (LEN(CONVERT(nvarchar(max),s2.text)) * 2)

ELSE statement_end_offset END) - statement_start_offset) / 2+1)) AS sql_statement,

cpu_time,

blocking_session_id,

wait_type,

wait_time,

wait_resource,

open_transaction_count

FROM sys.dm_os_schedulers a

INNER JOIN sys.dm_os_tasks b on a.active_worker_address = b.worker_address

INNER JOIN sys.dm_exec_requests c on b.task_address = c.task_address

CROSS APPLY sys.dm_exec_sql_text(c.sql_handle) AS s2