It's not really, seeing as how she relatively learn things instantly, as with her Katsuyu jutsu, summoning, tree climbing, and chakra enhanced strength...which is based on the fact that she used a similar technique in her fight with Ino, to increase her speed.First Bold: Assumption. Pure assumption. Considering Sakura did not use Genjutsu even once in the series does not suggest she'd instantly master it.
Second Bold: Imbalance how? Because two Dojutsu users are on a team?! Furthermore, replication of techniques?! Pray tell how Saskue suddenly can see 10 Kilometers in any direction? How Sasuke can see through walls? How Sasuke can see tenketsu? The only "similarity" the eyes share is seeing Chakra..... that's it. Yet the Byakugan's use of it is superior. If anything, Hinata simply would have been the keen eyed one in the group... since her Visual prowess would have been the best as far as Part I goes. If anything, two dojutsu users would have been a rather intelligent move. Recall, they were originally to control Kurama. Sasuke's sharingan being able to control Biju. So while you have Sasuke visually halting Kurama. At the same time you could have had Hinata's more advanced observation of chakra to block of key points to prevent a true flow of Kurama's chakra. Which... assuming Naruto wasn't willing the chakra to come forth wouldn't end like Naruto vs Neji... and hell, even if it did... that doesn't mean they can't be blocked again.
Also, god level, please. God level would be what Naruto did. Matching the chakra signatures of EVERY alliance combatant almost simultaneously and nearly instantaneously. Then maintaining this whilst fighting against Madara/Obito. Sakura has shown top tier Chakra control... but god level is an exaggeration.
Hinata's control is above average. Twin Lion Fists shows mastery over shape manipulation. The manipulation manifesting an actual physical appearance honestly puts the control even over that of Rasengan... which is a ball... a ball. Jyuken itself focuses entirely on control of chakra. Pinpointing the tenketsu on the hand to release chakra into the opponent to either speed up or slow down a system requires great control and understanding. Being able to fire off enough chakra for air wall palm also has to factor in not just mastery over tenketsu release, but focus and pressure of chakra to create a physical blast of wind. So really until the Yin-Seal completed... they were fairly on even ground in terms of feats. By hype however, Sakura has always been said to have great control. Even then she's honestly still below Tsunade in terms of control.
Now let's return to this Imbalance idea. Now, how is Sakura and Sasuke being Yin users and Naruto a Yang user balanced?! It is impossible to have them balanced.... so Hinata and Naruto being Yang users while Sasuke a Yin user is honestly not very different. And Frankly, this is exactly how it turned out. Sakura and Naruto focusing on being Yang (direct) attackers with Sasuke being a Yin (genjutsu) user. Which honestly didn't end up having any merit since Sasuke himself hardly uses Genjutsu and instead focuses on Ninjutsu.
Yeah Hinata can make a cute little kitty, Sasuke can make a pretty dragon, and Naruto can make a ball. That isn't nice chakra control. But you have got to admit, Sakura is god level, because of her hype as a medic ( all aspects refine to perfection), her able to manipulate it whilst storing chakra for 3 years straight, and her innate ability channel it throughout her body with ease, as well as others.kankuro,
Sasuke was yin and yang, iruka said so. So Sakura was yin, then her and Sasuke seemed to switch places, she became yin and yang and Sasuke mostly focused on yin, ocular jutsu.
Though Sakura yin prowess have yet to be explored