Hi there!
I have a ping of 230. I live in Australia. I play a prot warrior. I am level 32.
Rolling around the shimmering flats this weekend, I got 68 honourable kills.
It did irritate me greatly that charge showed as being able to use - but not activating due to the target actually being out of range - but it is by no means unplayable, or hurting my ability to smash faces.
You should try playing games at a high ping more often. For a lot of people - they have no choice but to play with a high ping. Rather than having a sook about it we've learnt to adapt and play just as well as you can with a low ping - if not better because we don't throw our hands in the air and cry about it - we deal with it and still smash faces without issue.
www.kleenex.com should assist you until you're able to build a bridge.