Harribel didn't use water to melt ice. She had a seperate ability call hirviendo which was a heat wave and it melted Toshiro's attack before it reached her.
Actually Luppi was pretty strong considering he took on a captain, a vice Captain and the 3rd and 5th seats of the 11th division that are actually stronger than most vice captains and could have won.
Using 1/5 of your total power makes a huge difference (off topic, that's the same difference of Goku Kaioken x10 at 30 million and Super Saiyan at 150 million. It made a BIG difference). Remember that Ikkaku had no restriction on his power but still needed to pull out a bankai to barely beat Edorad Leones, who was jr to the fraccion Toshiro fought. And I bring up the point again that Komamura himsel used a bankai to dispose of a fraccion and without being limited after Poww bested him in striking power.
Again, Baraggan was the top Hollow known, second arguably to Starrk alone, and it took the Future Head Captain to beat him and very dirty at that. Unlike other Espada, Baraggan in base STILL had time dilation abilities. The only difference is that in release he also had access to respira. It's not like Komamura would have faired any better than Soifon against Baraggan, in fact it would be worse given his slower speed. He couldn't evade respira at all given that Soifon could only do so partially.
A single hit of Komamura's bankai would crush Soifon, but Komamura would be destroyed by hers, and he probably wouldn't fare well against her shikai either.
Agree with the last point. Byakuya is the most able Captain here.
He didn't have an advantage against her they were equally advantaged. He could freeze her water but she could melt his ice. She may not have been serious the whole time but when Yamamoto cut down her fraccion she became serious. She attempted to take him down as quickly as possible so she could challenge Yamamoto, but she failed. Also it's not like Komamura fared well against Tosen. He only managed to break his arm. Tousen destroyed him and actually was killed by Hisagi blindsiding him.
Yes Toshiro would have lost to Luppi had the latter not been careless, but he did ultimately beat him. He was a mid rank Espada after all. He also struggled against Grimmjow's fraccion, but when you're using 1/5 of your power, I don't see how there's any shame in that. He beat him immediately after the limiter was released even though he was on the verge of defeat before. And as for Fraccion, Komamura himself went bankai and no limiter against a fraccion as well because the latter was stronger in base and release otherwise.
Soifon was losing to Baraggan, but of course she was losing. He's the ex King of all Hollows. Pre Hougyoku Aizen didnt even want to fight fairly and instead used his hax illusions to trick Baraggan. In the end Baraggan's own power needed to kill him. If Komamura had been the one fighting Baraggan it would have been even worse. But I can agree that she beats him primarily due to speed, but her shikai/bankai are excellent counters to his own as well.