From a true statistical perspective would these results really be deemed volatile?

I think it is a bit like the stock market in as much as the degree of (perceived) volatility will vary with the time span being examined. If you looked at these sort of results in three monthly periods after (say) ten years then it would possibly appear a very stable set of results?

As Chrome alluded to, I think the hardest thing for punters to come to grips with is that profit making doesn't necessarily follow a nice straight line - which is why you see some punters changing systems/methodologies as often as they change Irish underpants.