Here's a query for comparing Services on two machines. Just Clone the "Compare software inventory on two computers" report and replace the SQL with below.
 
select (case when inv1.Name0 is not null then @name1 else @name2 end) as Netbios_Name0, 
         (case when inv1.Name0 is not null then inv1.DisplayName0 else inv2.DisplayName0 end) as DisplayName0, 
         (case when inv1.Name0 is not null then inv1.Name0 else inv2.Name0 end) as Name0, 
         (case when inv1.Name0 is not null then inv1.StartMode0 else inv2.StartMode0 end) as StartMode0, 
         (case when inv1.Name0 is not null then inv1.StartName0 else inv2.StartName0 end) as StartName0
 
from  (  select s.ResourceID, s.DisplayName0, s.Name0, s.PathName0, s.StartMode0, s.StartName0
 from v_GS_Service s join v_R_System sys on s.ResourceID=sys.ResourceID  where sys.Netbios_Name0 = @name1  ) as inv1 
 
full outer join  (  select s.ResourceID, s.DisplayName0, s.Name0, s.PathName0, s.StartMode0, s.StartName0
 from v_GS_Service s join v_R_System sys on s.ResourceID=sys.ResourceID  where sys.Netbios_Name0 = @name2  ) as inv2 
 
   on inv1.Name0=inv2.Name0 and inv1.StartMode0=inv2.StartMode0 
where (inv1.Name0 is NULL) or (inv2.Name0 is NULL) order by DisplayName0, Name0, Netbios_Name0
 
 
Here's a query for comparing AddRemovePrograms on two machines. Just Clone the "Compare software inventory on two computers" report and replace the SQL with below.
 
select (case when inv1.DisplayName0 is not null then @name1 else @name2 end) as Netbios_Name0, 
         (case when inv1.DisplayName0 is not null then inv1.DisplayName0 else inv2.DisplayName0 end) as DisplayName0, 
         (case when inv1.DisplayName0 is not null then inv1.Version0 else inv2.Version0 end) as Version0 
 
from  (  select s.ResourceID, s.DisplayName0, s.ProdID0, s.Publisher0, s.Version0
 from v_gS_Add_Remove_Programs s join v_R_System sys on s.ResourceID=sys.ResourceID  where sys.Netbios_Name0 = @name1  ) as inv1 
 
full outer join  (  select s.ResourceID, s.DisplayName0, s.ProdID0, s.Publisher0, s.Version0
 from v_gS_Add_Remove_Programs s join v_R_System sys on s.ResourceID=sys.ResourceID  where sys.Netbios_Name0 = @name2  ) as inv2 
 
   on inv1.DisplayName0=inv2.DisplayName0 and inv1.Version0=inv2.Version0 

where (inv1.DisplayName0 is NULL) or (inv2.DisplayName0 is NULL) order by DisplayName0, Version0, Netbios_Name0