Selecting an Error Metric for Series With Zeros and Different Scales

Question 1

A model is designed for two-time series: T1 = [10, 0, 0, 20, 30], T2 = [100000, 2000000, 30000000, 4000000, 5000000]. Which is the right evaluation metric for the task to compare model performance on the two-time series? Note: T1 and T2 are the observed values for each time series.