Why might economic value added be a better performance measurement in the long run compared to residual income?

Performance is normally measured in a 1-year time-period, and actions which increase ROI in the short run (1 year and below) might decrease RI on the long run. ROI is calculated as operating profit / total assets. As total assets are depreciated over time, and if profit remains the same, ROI increases. BUT, this can harm the company long term if new investments are not made. ROI is also difficult to compare over time, as assets bought in different time periods might have different ages, units, and costs.