I am an Aussie that gets 360ms without a VPN.
With a VPN I get 260ms. (I use pingzapper, and connect to their Chicago servers).

Without the VPN I can't dodge anything.
With it, I dodge everything - unless I genuinely stuff up or hesitate.

With the latest patch, they reduced positional updates down to 100ms (from 300ms) so basically this was one of the underlying issues. Your character positions were updated less frequently then most people even ping to the server - so this is what was causing a lot of people with low ping to have issues dodging. There was a work around to this and that was to perform an action or do something like jump, which would force your client to send a positional update to the server once you step out of the AoE, however now that the positional update frequency has increased by 3, it is much easier to dodge.

Honestly, as an Aussie who pings @260ms, if you can't dodge Titan abilities with ping any less than this - then there is some other unknown factor here. (Whether it be equipment or user error).

I would agree with any of these latency issues if your ping was higher then mine - as that is truly what it comes down to. However if it is lower then mine, I would find it pretty hard to believe that it is the fault of SE, as their game is server driven (unlike many which is client driven), and while I do not entirely agree with their decision to do it this way, this sort of netcode is heavily based around your ping.

As someone who has no issues dodging Titan HM/EX and has high ping, I strongly suggest anyone that is having trouble, look into using a VPN (I recommend Pingzapper as they have a free trial of 60mins per session - so you can connect and use their service for 1hr at a time without paying anything).

If you are on a PS3, then that's just too bad.

Aside from this, once again - I fail to see how it's SE's fault if you are unable to dodge Titan abilities when pinging less then I am - especially in this latest patch.

If you were to talk about design choices (such as client driven is better then server driven, or buffs from non-GCD abilities should be applied BEFORE the animation), then I would completely agree - there are many things that could be done better.
However for a server-driven game that relies on dodge mechanics - there is nothing else I can suggest but to try and get as low a ping as possible.