That scan says nothing about Naruto becoming like his mother in life force, because when Naruto's beast was ripped out, he went completely out, on the verge of death while his mother still had quite a bit of fight in her left, able to stop a tailed beast from moving while Naruto couldn't do a damn thing.
Naruto's control of the Nine-Tails was nothing like Kushina's, Minato's comparison of the two is void, considering Naruto is in complete control of the chakra unlike his mother. If she ever used Kurama's chakra, I'm 100% certain it was nothing like Naruto's current use of it.
Naruto might have powerful attacks, but his chakra isn't potent, Sasuke's is.
You should know that even though Naruto is only half Uzumaki, by mixing his chakra with Kurama since his birth, it's only logical to think that the quality of his chakra went up. It's a freakin' tailed beast's chakra after all. Look at Gaara...
Then, Naruto also has his transmigration chakra from Ashura. You can't say that Ashura's chakra didn't make Naruto's chakra stronger.
Lastly, Naruto received Rikudo chakra from the Sage. Obito had Rikudo chakra even after he lost the ten tails. He also passed it on to Kakashi, who much later created a move with purple lightning, proving that he still had the quality.
No matter how you look at it, Naruto's chakra quality should've far surpassed an Uzumaki's by now.
EDIT: Also, Chakra control depends on the talent of the individual. Even if Kushina could learn to control Kurama's chakra better that doesn't prove anything in terms of chakra quality.
However, we have already seen that Naruto was able to use the power of all the tailed beasts, even if the majority of those were only smaller amounts. He was able to obtain a Rikudo Mode, something that requires the Gedo Mazo (Body Enhancement) to achieve. It was the first time such a feat was done with a normal body.