Under the given conditions, Sosuke Aizen could defeat Zaraki Kenpachi in battle.

Of course no holding back. That's Zaraki's job. ;)Thanks to Hopeliveson for accepting the debate and for a skillful response.On another note, I'm gonna try my first Rich Text format argument. Let's see how this goes.---I'll start by defending my arguments.I apologize for failing to properly articulate my reasoning. What I meant by mentioning the Hogyoku was that Aizen's stats, which already exceed those of Zaraki, will surpass Zaraki even further once the Hogyoku begins to transform Aizen.You concede here that Zaraki exercises little caution in battle, its limits being adjusting his fighting style in accordance with his foe's power level. This lack of caution combined with Zaraki's inferior speed, which I proved earlier, and Aizen's superior tactical acumen will allow Aizen to outmaneuver Zaraki and kill him regardless of which fighting style Zaraki uses.Zaraki may be able to adapt well, but Aizen can adapt with arguably greater. Aizen quite easily adapted to and defeated Shinji Hirako's [17] Shikai, Sakenade. Sakenade is arguably more debilitating than Tosen's Bankai, Enma Korogi [18]. While Enma Korogi simply takes away most of the senses, Sakenade actually distorts the input from all five. This makes fighting by reflex and instinct extremely difficult [16]; however, Aizen adapts extremely quickly. Zaraki's adaptation to Gilga's Hierro is impressive; however, I have already proven that Aizen adapts to adverse conditions as quickly as Zaraki can, if not more so due to his superior speed and intelligence.While Zaraki has fought opponents with decent skill diversity, none of them can compare to Aizen's. Ichigo, Sajin, Gilga, and Yammy all lack Aizen's skill with Kido, and none of Zaraki's opponents thus far have intellect or speed anywhere near as strong as Aizen's. Aizen's intelligence and speed are two of his key advantages in this battle; these, more than any others, allow him to exploit his superior skill diversity by quickly formulating and executing plans in the heat of battle.I see my opponent's logic; to this date, Zaraki appears to have equaled the strength of every opponent he has been presented with. However, none of these opponents possess a combination of raw power and skill that can compare to Aizen's, and nothing in the series thus far has indicated that Zaraki is as strong as Aizen. My opponent's statement here is merely conjecture without a supplementary source. Zaraki's priotization of a good fight over his own safety is a trait that I have already mentioned will contribute to Aizen's victory.In summary:Aizen's already superior statistics, which my opponent has not proven to be within "the domain of Zaraki's power", will only be further increased by the Hogyoku as time passes.Aizen's vastly superior speed and presence of mind render Zaraki's Kendo useless.Aizen is even more capable of adapting to a difficult situation than Zaraki, as demonstrated in the above video.I have shown that Zaraki's desire for a good fight will lead to his downfall. My opponent has failed to show how Zaraki's superiority to Gilga, while great, indicates a superiority to Aizen as well.None of Zaraki's opponents have Aizen's intellect or speed, the two attributes that make Aizen's skill diversity so dangerous. None of these foes are as capable of using their array of skills as Aizen due to their lacking comparable speed and intellect.While Zaraki may be able to crush a barrier Aizen uses, this still requires Zaraki to outmaneuver Aizen, something I have shown to be extremely unlikely due to Aizen's speed. Even if Zaraki does land a hit upon Aizen, unless it was immediately fatal, Aizen would simply Shunpo away to regenerate.In conclusion, all of PRO's arguments still stand. As CON has presented no arguments, PRO has seven arguments to CON's zero.---I will now summarize why Zaraki cannot defeat Aizen.Aizen is vastly more intelligent and fast. Zaraki cannot outmaneuver him to strike a lethal blow, and even if he did outmaneuver him, Aizen would have already placed protective barriers around his head. Zaraki may not be able to break through the barriers, and even if he could, they would slow his strike sufficiently for Aizen to counterattack. If Zaraki does strike a blow that is not lethal, Aizen would simply regenerate and grow stronger due to the Hogyoku. Aizen also has a wider diversity of attack strategies due to his intellect, Kido proficiency, and speed. Zaraki, while powerful, cannot hope to strike a lethal blow upon an opponent that is so much faster and smarter, especially when this opponent can attack from out of Zaraki's range and outmaneuver him when Zaraki is in range. Zaraki simply has no hope of victory.---Sources:[16] Shinji vs Aizen video http://www.youtube.com...[17] http://bleach.wikia.com...[18] http://bleach.wikia.com...;