Unless all of your users are working from your desk, you're 'typical ping' is worthless.
This ping tool would be far more valuable if you could see the ping times from different clients over time. Then you could actually make a judgement call if AWS is or isn't a high performance option.
Sorry, my phrasing was unclear. My AWS ping time is from my desk, the "typical ping" to our colo is from anywhere in the south of the UK where all our clients are.
My best ping time is 41ms to the Europe region. But a typical ping to our colo servers is 18ms. AWS isn't a high performance option.