time series comparison

http://stats.stackexchange.com/questions/25228/testing-for-statistically-significant-difference-in-time-series

https://en.wikipedia.org/wiki/Bland%E2%80%93Altman_plot

http://www.r-bloggers.com/how-to-compare-two-blackbox-timeseries-generators/

Difference DID?
https://www.researchgate.net/post/How_do_I_compare_two_time_series_trends_in_terms_of_magnitude_of_decline_or_increase