Not Part 1 Kakashi they don't.
They've each fought and done well against people equal to or better than him.
COPY..........................................NINJA................................................KAKASHI.
'NUFF said
their is no difference between kakashi part 1 and part 2 aside from War (part 3) Kakashi with the 2 sharigans eyes.
Kakashi is the overall example of a great Ninja.. he doesn't need a Susanno to wash the rookie 9.
who stopping Chidori /Rakiri..out of who you named.... who keeping up with just the one sharigan...?
He would've killed Kazuka if not for him having 4 hearts... im fittin to just say without the gates Lee DEF aint seeing him (which if IIRC didn't he copy the open gates technique in part 1 from when lee did it the first time...)
Neji is the only one who could/'ve give him problems.
possibly slept on Shino. (who I always thought was the 2nd best out of the genin 9)
Plot Twist-None of them have abilities he can copy.
There's a massive difference in basic ability between Kakashi in Part 1 and Part 2. Not only did he gain the Mangekyou Sharingan, but his overall chakra pool expanded. Part 1 Kakashi fought Zabuza and was left out of commision for days, whereas in Part 2 that only happened when he used the Mangekyou, which noticeably put greater strain on him than anything he did in Part 1. Kakashi in Part 1 couldn't do **** against Itachi, whereas in Part 2 he took him on with little problem, managing to plan around and counter Itachi's superior genjutsu. And by the time of the War Kakashi, who couldn't properly use Kamui 3 times without collapsing, used it over 5 times in the same day with no issue, overall fighting far longer than he ever did previously. Come on now, don't act as if the Mangekyou and 2 Sharingan is the only way he improved over the course of the story. Hell, Zabuza was actually a challenge for him in Part 1 and got completely stomped by him during the War.
Chouji fought the Demonic Statue of the Outer Path and actually survived blows from it, when beforehand it was killing everyone left and right. Chouji actually DID beat Kakuzu, and his speed was allowing him to move faster than most other people present. ****, Chouji can grow larger enough to get hit with Raikiri and not feel a thing.
Sakura again has super strength that let's her kill Kakashi in one blow and healing that allows her to recover from any injury.
Lee move's faster than the eye can see, without the Gates, and has the strength to break solid rock as well, both of which Kakashi can't do.
Kakashi fights Neji then he has to spend the battle avoiding Taijutsu entirely, and he doesn't have solid long range attacks to end the fight. Best bet is Chidori, which Neji can see coming with Byakugan.
Shikamaru is the only one here whose physical skills aren't equal to Kakashi in any way, as his fight's always rely on the strategies he comes up with.
Kakuzu is Part 2 Kakashi so that's irrelevant. Part 1 Kakashi had trouble with Zabuza and was completely ineffectual against Itachi.
These people will do just fine and I think you're honestly kidding yourself if you think they haven't equaled Kakashi as he was at the start of the story, especially when they've again fought people at the same level who Kakashi at that time was completely washed against. Part 1 Kakashi literally has 2 fights to his name: Struggling against Zabuza and getting stomped by Itachi, neither of which are the best showings in the world.