A POP is a different matter to offering ADSL2+ via a MSAN the Zen article talks of "local exchange POP network to deliver Ethernet services" which is very different and I suspect the SamKnows is just listing those pops rather than where ADSL2+ is available.
Certainly if ADSL2+ is at the 200 locations from a Zen MSAN, then why is there not an unlimited ADSL2+ product, like there is for FTTC?