Sorry about the trouble I'm causing. I'm trying terribly hard to make it as plausible for the characters as possible using both the info wikis of these characters as well as on the character sheets, although I guess that's still not enough. 

I've edited my post to make it more acceptable. Again, sorry. 

Now that I think about it, though, Senbonzakura hasn't even been using his Bankai for that long. A couple minutes, at best. We've just been losing track of the time in it due to our perspective of time outside the rp. Senbonzakura would still have plenty in reserve after only a couple minutes of usage of even his Bankai. 

Plus, he is quite a powerful being himself, having survived fighting Ichigo Kurosaki and withstanding even his most powerful Getsuga Tenshou with only a cracked mask to show for damage. So he himself isn't exactly a pushover either. Yes, I am aware of the Level 5 Railgun's abilities, although not so much Suwako's, and although Misaka can indeed "take out an army", she's still human and will get fatigued from that feat, as stated even within the anime itself. Plus, it's widely believed that the Railgun is her best move, so I don't really buy it that much else she uses can be more powerful than that. 

Suwako, true she's a goddess, but she hasn't exactly been using very power attacks compared to a Getsuga Tenshou. Iron rings and bullets, that's about it.

While I can accept that they are powerful opponents, there's still the matter of time. How long has it actually been since they started fighting? 5, maybe 10 minutes at most? That's not nearly enough to feel fatigue, at least for Senbonzakura, who is indeed a powerful Zanpakuto spirit. Suwako, I doubt she's fatigued either, and Misaka joined the fight late, so that's out of the question too. 

For the sake of rp'ing, however, I will comply with your demands. 

I'll resume editing.