Does this seemingly simpler, and far faster, method produce accurate results?

SELECT name [Table], sum(row_count) AS [Rows]

FROM sys.dm_db_partition_stats WITH (NOLOCK), sysobjects WITH (NOLOCK)

WHERE index_id < 2-- Just grab index 0 (heap) or 1 (cluster)

AND xtype = 'U'

AND object_id = object_id('' + name + '')

GROUP BY name