You have four generals, 100% stealth, and 100% mana.
That's three potential guns.

If you have 25 people, and 12 of them are only using one gun, but the people you battle also have 25, and all of them are using two guns, you're going to lose automatically.

You overspecialize.
You have great and awesome offense - yes - but you also have stealth and mana. Why aren't you using one of them, in addition to your great and awesome offense? Because you've been told orc is only 'the best' if it hits, and does nothing else.

Contrary to popular belief, you don't need to be 'the best' in order to win - you simply need to be better than your opponents.
Being 'the best' typically means you're going to imitiate an already established style of play, with or without knowing the true strengths or weaknesses related to it.

When you take 'being the best' too far, you'll enter a realm that's known as netdecking.
If your opponent's team in pokémon has a gyarados, it's going to be either really bulky, and have taunt, or dragon dance, because these are 'the best' gyarados.
When I toss out vaporeon, you're going to assume it has surf, wish, and nothing else of concern, because that's 'the best' vaporeon.

Essentially, all those who are 'the best' use already established, tried, and proven setups, and thus have very low variety. You meet an orc on the remains of the mid-tier or above, you're almost guaranteed it's going to be a 'heavy attacker,' because that's 'the best' orc.

Now, when one of my orcs steals all your orc's ponies, or straight up nighstrikes your stuff to pieces, you're going to say that I'm cheap - just like how people say I'm cheap when I use my jolteon for offensive purposes, and destroys dragons in one hit.
They simply don't expect these things to ever happen, because, in their little worlds, running anything that's not 'the best' is simply unthinkable.

Rather than learning from this, and remembering that orcs have stealth, too, and jolteon actually learns offensive moves, and has good special attack, they're going to cry, whine, complain, and eventually ragequit.
Those who don't cry are better than you, and have, quite effectively, defeated 'the best.'

Ryu only has hadoken. Sagat's not able to throw. Orcs can't run ops. Grass is useless. Sol is only good if you can land a dustloop. Fox McCloud only. Jolteon only learns support. Vaporen isn't a threat if you wall it. All this because you've been told it's how things are - you either didn't feel like forming your own opinion, or you're not knowledgable enough to do so.