I see the prodigy geniuses winning this. Mayuri and Urahara are certainly the smartest shinigami's to date. They probably have a better understanding on there opponents, but these are the youngest captains and IMO the ones with the most potential in the manga. Hitsugaya is the weakest link here, and not powerwise, because he has that it's just his experience and his mindset which leads him to fail. If there's, no prep for the true geniuses I definately don't see them winning. I ultimately see the young geniuses, although (Byakuya wasn't known as one) working as the better team also. All having the range advantage, all having some good versatility and speed of there attacks. Gin's poison will probably be a non factor to Urahara and Mayuri. But I can possibly see Szayel getting tooking out by it or a surprise shinsou to the chest or head. Urahara has speed, kido and his inventions, Mayuri has this aswell, but so those the opposing team. Team Genius has the speed advantage IMO, if they play there cards right they should be able to win this with difficulty.
if syazel is able to plan ahead...then he sets up the victory for Urahara n mayuri it be so over it funny....syazel is really hax if he given time to set up a fight n in that team they would stomp everyone.
Syzael LOLNOs bankai's so probably the second set, particularly since Byakuya and Gin's shikai's are utterly worthless against captains. Though admittedly I can't recall if that was a location thing or not. Either way I'd probably go with them though. Benihime's extremely flexible, Mayuri and Syzael, though physically weak are quite hax. Both would have to be killed very quickly, which while possible particularly given this set isn't a sure thing.
The top 3 IMO...Gin could take Urahara on his day IMO and Byakuya and Histu should take the other two....
But unfortunately, Sayzel is no captain. He is a low espada and any captain would take him out in shikai, especially Byakuya and his speed or Hitsu, who's shikai was so strong that Kira was suffering just being close.
They are not Renji and all 3 can use kido to boot.
Mayuri is a tough one, but he is not the greatest fighter, relying more on his brain and planning. His bankai is dangerous to anyone up close, but look who he is fighting.... the three best ranged captains.
Urahara is the best fighter of the lot, but even he may have trouble with 2 captains at once. He is not Yama.
Hitsu et al win imo.
I'm going with the scientist bunch. Overall I'd feel much more confident in their abilities and capability. They may not have the raw fighting power, but they're all very tricky and very smart.
Byakuya would be troublesome for either of the three, but there's just too much going for the wiseguys, IMO.
This is a complicated one. In terms of raw power I would think byakuya, gin and hitsugaya are superior. Unfortunately against the other guys raw power is not much of a big deal considering they have a practically limitless number of tricks. I think people kinda understimate grants though. If I recall he had that ink tecnique which created clones of the enemy. We do not know the limitations of that particular technique but an army of byakuyas, gins and hitsugayas is bound to be dangerous or at the very least cause a form of distraction for the these derange scientists to do something. I have to go for brains over muscle in this one. That said, it is worth noting mayuri's bankai would be worthless in this battle. In his battle against grants it was revealed his bankai was actually organic. Mayuri's bankai has no chance whatsoever of avoiding gin's bankai so naturally the poison would be a extremely good weapon against it.
Interesting match up However, I'm not sure where it says that Gin, Byakuya and Hitsu can't use their Bankais. Unless they are fighting in Szayel's specially designed Bankai proof room, in the scenario where Szayel has prep time, then I believe anyone can use Bankai. If Gin, Hitsu and Byakuya are restricted to Shikai, they lose pretty badly.
However, if Bankais are available to everyone, team Gin stomps. Byakuya could at least be a distraction to Urahara while Gin quickly takes out Szayel and Mayuri - neither have the speed to dodge Kamishininoyari. Urahara then gets triple teamed, where despite him being somewhat above Gin and quite a bit above Byakuya and Hitsu imo, he loses horribly. Hitsu doesn't even need to participate imo, Byakuya can just chase him with SKY while Gin takes shots at him with Kamishininoyari until he gets a hit, which would be pretty quickly
If Team True Genius has decent prep time, they win.
Urahara can handle himself even without it, but Mayuri and Szayel can become damn near unstoppable if they have ANY prep time or info on the enemy.
Szayel especially, better hope he doesn't analyze your Reiatsu, cause if he does, he can shrug off attacks with ease that would otherwise kill him.
If there is no prep time, it's a lot closer, but I'd still say "True Genius" takes this most of the time.