See that's the key thing, good batteries. But if you are stuck somewhere, having a non-starter starting problem that involves extended cranking, you might as well start walking. The guy you talked to was probably upset because he had dealt with too many people who replaced the starter in place of the battery because of a slow crank problem. The mitsubishi starter will put up with low batterry power for a long time before dying. Someone buys a new starter, puts it in, will likely have a problem or soon will. The ND locks up in short order though and the guy can say keep good batteries, simply because they are more sensitive.
James