vRA upgrade sequence

Hi,

I am planning for the vRA 6.2.1 upgrade from vCAC 6.0.1. I understood there is no way directly upgrading it but to vRA 6.1 first and then vRA 6.1 will be upgraded to vRA 6.2.1. I read the following article http://kb.vmware.com/selfservice/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=2109760 which has the vmware supported sequence for its products which says :-

1.) vRA would be upgraded first then VCD followed by vCenter and vRO

however, i read a non vmware article on which author followed the following sequence :-

Upgrade vShield Manager to latest release

1. Install/Upgrade or Configure vCenter Orchestrator to latest release
2. Install the NSX plugin for vCenter Orchestrator (as its needed for vCNS)
3. Optional: Upgrade vCenter Server Appliance to latest release
4. Optional: Upgrade ESXi hosts
5. Upgrade vCAC Café appliance to 6.1
6. Upgrade the vCAC Database to 6.1 using the dbupgrade script
7. Upgrade the vCAC IAAS server to 6.1

What is the best way to perform this, kindly suggest.