keep in mind what you quoted the other person said, that on his track you can't drive really fast. Power demands you place on the battery matter when concerning runtime in most cases.

I managed to dump a set of 6000mah batterys just under 10 minutes which worked fine previously for 10 minute running (same day) as I went up 2 pinion sizes for more speed. Knowing this, I went with higher C rated packs which could handle the load better.

When traction is high or you can put down the power without much wheel spin, you most likely will use less battery than when its loose. Saw this big time when I ran indoor winter racing with 1/8 electric. When I had the wrong tires and was pulling 200 ft straights packs that could do 20 minutes in ideal conditions were dumping at around 18. Luckily, I wanted 15 minute run time regardless so it didn't matter but it was a strong consideration.

And for 1/10 SCT, we are using really high Kv motors which can be very piggish on power requirements which will affect your runtime. Running on tracks in the 1/8 scale size like myself and others do, it can make a big difference versus what others are seeing on small indoor tracks.

Probably why some are using shorties.