TPG bought and own PIPE and PPC1 (or part thereof). If they buy capacity off of a competitor they support said competitor (ask amcom/Vocus if TPG act like that ).
If you play online games TPG/PIPE doesn't own fibre across to Perth (There's only 2? providers with fibre across there and both TPG competitors in the wholesale game). This means getting to Perth bounces you all over the country via PIPE and likely you'll end up in Sydney (or Bris god forbid but I think they stopped that now) and then hit Perth. Your ping will at least double what it should be. (contact support ... there's nothing to fix your connection works ping/latency is irrelevant).
If you want to get to anywhere in ASIA for any reason (gaming or any other latency sensitive app) you go via PPC1 to Guam and hopefully someone has agreed to peer with TPG there so the rest of the journey isn't like getting to Perth across PIPE. This doubles your ping into places like Tokyo or Singapore.
I'm a computer gamer and for me pings like the above matter, I've worked with a few companies and several of the above issues have meant Internode has gotten their business instead (and they cost a lot more).