REPCO home finance – another Gruh in the making?

Hi, Please help me with following.

I want to understand how NIM, capital adequacy, growth and leverage relate.

RHFL’s CAR was 20.26% at Mar 31,2015 and for Gruh it was 15.36%.
RHFL’s D/E was 6.29 and for gruh it was 11.56(taken from screener)

Now as gruh has more leverage on their equity base compared to RHFL, it will help them to disburse loans at higher rate than repco can and also ensure higher ROE. Then why repco is not taking their leverage up? Is Higher leverage a good parameter or higher capital adequacy? Of course, higher CAR makes repco more safe theoretically than gruh. But is it something to worry about?

Is it because repco’s NPA levels are very high compared to Gruh’s and they have to maintain higher CAR?

Also how all of this relate to growth?

Please correct me if I am wrong at any point.