No it has nothing relating to ISP.
This can be explained through this post: (or in fact if you just google any mmo ping issues with servers setup in SG for Aussie players)
The OP is trying to convince the developers of the MMO to not put a server in SG because most Australians will not benefit from it.
He also gave diagrams for physical cabling in Australia. The theory is that unless you live in Perth, you will not gain significant ping improvements. Because everything that goes to Singapore needs to be directed to Perth which adds 60-70ms for the east coast people.