11 bars is good for a 2012 with 38k miles. The rest of the information on the report is just to make the driver feel good. The range is just what the GOM (guess-O-meter or distance to empty, DTE as Nissan calls it) would display.
To put the report you received in perspective, I have received really good marks on some annual reports and lower scores on others. I received low marks for frequent topping off of battery on one report for the 2011 after using the climate control timer before leaving for work all "winter" (climate control timer use or remote activation while plugged in increments the L1/L2 charge count each time it is used). I received low marks for frequent DCQC on the report this year for the 2015 because I was taking advantage of the NCTC program before it expired even though I had less than 50 QCs in 2 years. There is no language in the warranty terms about low or high scores on the test, just requirement to have the test performed annually. The main purpose of the report is for Nissan to collect detailed battery information.
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015