Diffrence between WSUS and SCCM installing software updates

[Harmen1966]

I've followed this great article from Nail but still I have one important question why download and installs WSUS more software updates then SCCM 2012 SP1?

We've setup SCCM from this article and used the rules to download from our old WSUS envoirment, but the exsisting WSUS envoirment downloads and installs more software updates.

 

Any hint.

 

TIA,

Harmen

[Harmen1966]

update:

I’ve waited after patch Tuesday and find out according to the MS security advisory notification that our Windows 7 clients perfectly updated with the updates mentioned in this document.

But when I look at our Windows 2008 R2 servers updated with WSUS and our test server as my test server for Windows updates thru SCCM then I see a difference of three updates.

The updates that are not installed are on my test server are 2868725, 2862152 and 2900986 they were perfectly installed on the other 2008 R2 servers.