It's not the first time Otamendi's been pushed off like a small child is it? It's a recurring them throughout his 2 seasons.
Take a look at those stats you posted and they show you the problem with him. He's in the Red, Bonucci Blue, Laporte Orange, Stones Yellow.
You look at those stats and see "LOOK! He's won so may more tackles than anyone else!"
What actually matters is that he's missing over 2x as many as the rest. And when you play in a high line, and he charges out of defence and misses a tackle, it leads to very dangerous situations, if not a 1v1. And he's missing more than he makes.
And it's the same with interceptions. He gets 3.4 interceptions per 90 minutes - miles better than anyone else. But it's also higher than Pique, or Boateng - two definitive Guardiola centrebacks. Why? Because they don't make the stupid gambles he does.
He makes 3.4 interceptions per game but if his success rate is as good as his tackling, that means he misses 4. And each one of those misses can turn into goals like Willian's on Saturday.
His needless jumping out of the line also get's him far more yellow cards than any of the other defenders in your comparison - usually completely unnecessarily as well. Which means in turn he is often left walking a tightrope and unable to make a cynical tackle when we might need him to.
What we need, what Guardiola needs, is a calm, composed defender who stays on his feet. Otamendi is not completely shite, but he's the exact opposite of what we need, and unfortunately he is showing an inability to change when required.