ROI and RI

Hi. If two companies are in the same market but one is older ,the other was created newly (their assets' book value will differ) the question: Will the older company have better ROI and RI figures? I mean will being older make more favorable figures? I think for ROI it will, because of the lower value of capital employed. What about RI? Better for older again? (because of interest will be lower because of the asset value again) Thanks