First of all the Togaf certification you are referring to merely certifies you as a practitioner of the TOGAF methodology and not as an architect. The fact that TOGAF is an architectural framework and that you know how to use it , does not automatically imply you are an architect. Hence Togaf has two separate architect certifications
The architect certifications from The open group are two levels - Master Architect and Architect . The process involves an interview and in the case of the master certification , traveling to meet the board for a face to face. the cost is more than a thousand dollars if I remember right.
Having said that , I think the SCEA + the TOGAF practitioner should be equally good as the more expensive Master architect exam .
And the reason I think so is because most people confuse the TOGAF practitioner certification with the TOGAF architect certification. And guess what , as interviewee , I am not about to clarify the difference
As for the other certifications like the SAP and the SOA , they are technology specific, so the laws of demand and supply of the players in those narrow markets will define their usefulness.
Architecture on the other hand is technology neutral and hence the usefulness of any related certification is much longer.