Sry for being a bit late on this, I didn't notice the post
This guide is based on my own personal experience and choices for glads and I do admit that set the bar for my glads rather high. I would advise against following ANY guides to the detail as the most fun in this game comes from making your own gladiators and tweaking them till perfection. There is nothing more satisfying than having brought up your own glad and having them smack the other gladiators around the arena
As apoc pointed out you could always switch some heavy for medium armour (torso is the heaviest so if you swap out the heavy torso for a medium one that's a huge decrease in encumbrance right there)
As for your win/lose record, it's easy to get a high winrate in the lower brackets so although 91 wins and 59 losses is good it is also far from perfect. The only way you are going to make it all the way to the top is to gain more and more experience with the dynamics of the game and what works best for you tweaking strats and glads as you come along.