So, the average loss of the top 10 coins is currently not quite 8%. Mnx faces more than 20% loss in US $ and over 15% loss to BTC.

I do not see low volatility.
Rather the opposite is the case. because if that were the case, the value should actually remain stable compared to BTC. or not ?

a loss of 40% on a week does not look like a small dip.