16201879 - R12.1 Advanced collections Recommended Patch Collection March 2013m- ambiguous readme

Hello all
Could you clarify the contents of the README for the above patch please?  It's not clear whether the patch supersedes the RPC for Aug 2012 14310239 or whether it requires it as a pre-requisite?
Thanks

From the README:

Pre-requisites
--------------
<section for 12.1 and 12.1.2>

For 12.1.3
-----------
1) 13788010:R12.IEX.B : IEX JAN 2012 CONSOLIDATED PATCH FOR POST 12.1.3 FIXES
or
   14310239:R12.IEX.B:  R12.1: COLLECTIONS(IEX) RECOMMENDED PATCH COLLECTION
  (RPC), AUGUST 2012


Patches superseded
===================
14310239:R12.IEX.B R12.1: COLLECTIONS(IEX) RECOMMENDED PATCH COLLECTION (RPC),
AUG 2012
13788010:R12.IEX.B IEX JAN 2012 CONSOLIDATED PATCH FOR POST 12.1.3 FIXES
12749104:R12.IEX.B IEX JUN 2011 CONSOLIDATED PATCH FOR POST 12.1.3 FIXES