It is hard to argue with prior success. The battery industry is consolidating and subletting production to contractors so frequently that it is impossible to determine who makes what battery and to what standards that battery is made for. So it is best to rely on prior experience or mass recommendations by a lot of people rather than by specification labels pasted on the side of a battery. A general rule when comparing cyclable batteries is to find out the amp hour rating then divide that by the weight of the battery a true deep cycle battery will have less cranking amps less ampere hours yet weigh heavier than a light duty or marine battery. this is a question of the thickness of the positive plates Thicker plates have less surface area and the smaller the surface area the less the cranking amps and the less the amp hour capacity of the battery will have.