The Mizuno Global Elite Jinama Leather Series (GGE50J1) features Jinama Leather which is rugged, rich, Japanese leather for extreme durability. The leather on this Mizuno Global Elite Jinama Leather Series (GGE50J1) will come pretty stiff and take at least a month-or-so to get ready for use in games.
The Mizuno Global Elite Jinama Leather Series: GGE50J1 has more of a clay red color hue to it.
All of the gloves mentioned contain the best leather the manufacture has to offer. With that being said, a major factor could be the webbing and weight. The A2000 has a superskin making it stay dry reduces weight. The durability depends on how often you use it and how well you take care of it. But they all have very similar break in periods making the stiffness comparable across all of them.