Sadly those stats just simply don't pass the eye test. Put an opposition midfielder facing either pogba, kroos or modric and he's more likely to get past the kroos and modric than Pogba. Hence Pogba was making taking the ball from the spanish midfielders look rather easy in the france-spain friendly. Just watch him week in week out, he just continuously shoves players out of the way to take the ball. While they find it impossible to do the same to him. Yes, those two have him on passing but that's just about it.
His size and strength makes him unique. Kroos isn't even in this conversation considering the disdain that atletico midfielders generally treat him with. As much as modric has a great work rate it just doesn't compensate for the power factor that Pogba puts on the table. He's no slouch either and generally covers the spaces his meant to really well in the juve formation.
Madrid hardly ever play 2 in midfield so I don't really know what you're on about there. Their stock formation is a 4-3-3. They tried the 4-2-3-1 formation when the season started and duly scrapped it.
That's simply not true. Pogba sticks a foot in more hastily than Modric, but it's his early over-committal to the tackle and direct approach that catches him out way more too. Modric doesn't let people past (just watch Real Madrid), they either get funneled to a wing or forced back, or at the very least slowed down. That's his job and he does it brilliantly and completely without flash.
You assume that long-leggedness and strength are what make a defensive midfielder, when it's really positioning and awareness. That's the reason Daley Blind is a better defensive midfielder than Dickson Etuhu. Modric doesn't make a tackle unless he knows he's getting the ball; Pogba takes more chances and for that reason gets caught out more and gives away miles more silly free kicks in dangerous positions.
Again "shoving players out of the way" isn't the sole mark of a great central midfielder. Nor is using one friendly match, just because it's against a team that won the World Cup. Over two years, Modric has got beaten in midfield way less while making as many tackles. He wins as much of the ball, but taking less risks and getting punished less doing it, in a 2 man midfield.
Pogba's style without the ball is comparable to Jones or Herrera (taking chances, shoving his shoulder in and not holding back); Modric's to Blind (funneling, timing the tackle and slowing the break, without fuss).
Kroos has greater final ball than Pogba, almost never gives the ball away and defends considerably better. To say he isn't in the conversation because of a bad game against Atletico is ridiculous. Especially when he's stood the test of Champions League and World Cup finals, as opposed to Serie A league games.
Once again, there are tonnes of great hard work midfielders who can't position themselves. Modric does both, which is why he's genuinely a great central midfielder without the ball as well as with it. It doesn't matter that he's small; Claude Makelele was 5 foot 7 and looked like Ossie Ardiles could blow him over sneezing. It's about positioning and Modric learned how to do it very well.
Pogba's puts himself out of position and takes chances to win the ball. Modric keeps the gaps plugged and stays in control, to win the ball. Hence Pogba wins 40% of the ball and the rest finds himself wrong side or conceding a free kick in a difficult position. While Modric wins 55% of the ball and lessens the pressure on every other player around him.