Same Database, Same SQL Version, Very different Performance - sql-server-2014

Question

We are having a performance issue with a reasonable simple stored procedure, so we to a back up of the database and restored it on a simple test machine and on our replica of our production environment. The only differences in the machines and the databases is the hardware, one is in a VM with 8Gig RAM and 4 processsors, the other is a physical cluster 64Gig RAM and 8 processors.
We have the same version of SQL Server (2014 SP1) on both machines, both databases restored from the same back up. When we run, the one takes less than a second, the other takes 2 minutes 40 seconds producing the same result set of 2976 rows.
The main table involved only has circa 59K rows. The execution plans are nearly identical but but for the outputs on one of the clustered index scans
So what is driving me nuts is how / why would an identical database on identical versions of SQL Server produce two wildly different actual number of rows (174822900 vs 58764) with 2975 executions vs 4 ??
This is the code being run
DBCC FREEPROCCACHE;
DECLARE #return_value int
EXEC #return_value = [dbo].[ngage_Tree_SelectClientData]
#ParentId = 0,
#FromDate = '2016-08-04 17:16:40.367',
#UserGroupId = '1|',
#MaxToReturn = 100000
SELECT 'Return Value' = #return_value;
and this is the code for the stored procedure iteself:
CREATE PROC dbo.ngage_Tree_SelectClientData
#ParentId BIGINT
,#FromDate DATETIME2
,#UserGroupId VARCHAR(50)
,#MaxToReturn INT
AS
BEGIN
SET NOCOUNT ON;
DECLARE #parentHierarchyId HIERARCHYID = (SELECT HierarchyId
FROM Tree
WHERE Id = #ParentId);
SELECT DISTINCT TOP (#MaxToReturn)
t.Id, t.ParentId,
t.Title, t.Ordinal, t.HelpTopicId,
t.IsFolder, t.SmallIcon, t.LargeIcon,
t.CmsTemplateId, t.IsSystemFolder,
t.ContextMenu, t.DateModified,
CASE
WHEN n2.[HierarchyId] IS NULL
THEN 0
ELSE 1
END AS 'HasChildren',
t.ToolTip,
t.[HierarchyId].ToString() AS ParentIds, t.Depth
FROM
Tree t
INNER JOIN
TreeToUserGroups ttug ON ttug.TreeId = t.Id
AND ttug.ReadPermission = 1
AND ttug.UserGroupId IN (SELECT ResultList
FROM dbo.SplitCommaList(#UserGroupId, '|'))
LEFT OUTER JOIN
Tree n2 ON t.[HierarchyId] = n2.[HierarchyId].GetAncestor(1)
WHERE
t.IsDeleted = 0
AND t.IsArchived = 0
AND t.DateModified > #FromDate
AND (#ParentId = 0
OR t.[HierarchyId].IsDescendantOf(#parentHierarchyId) = 1)
AND t.Id NOT IN (SELECT Id
FROM Tree
WHERE (TreeObjectType = N'EcomProduct'
AND Title = N'(MISC) MISC')
OR (Title = N'Tag Groups'
AND TreeObjectType = N'TagRoot')
)
ORDER BY
t.DateModified ASC;
END;
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