What makes you say ODS is something Shiraishi can adapt to over the course of two games? When it hasn't been actually broken yet by anyone and we don't know of any glaring weaknesses that could be abused (unless you would like to point one out of course).
Kite took four consecutive games off Vanilla!Tezuka, something I don't see Shiraishi do.
Yes, I know. When I mentioned that Shiraishi can handle everything Kite throws, I know that I neglected to mention that Shiraishi isn't exactly powerful offensively; however, he still did win all of those points (I forget whether it was 20 or 23) consecutively against Kantou!Fuji. Entaku Shot isn't a move that he spams or anything, and honestly, based on what we've seen out of Kite, he should be able to return it.
To be honest, even no Gauntlet!Shiraishi might not win very many points against base Tezuka. It's hard to pin down where base!Tezuka stands. On the other hand, Kite only played against base!Tezuka and Hyakuren!Tezuka, never facing Zone!Tezuka.
I do think that there's a chance that Shiraishi could see through ODS eventually. You do have to remember that ODS isn't actual teleportation or anything. I don't think that Shiraishi became hugely better without the Gauntlet (his foot speed didn't increase, for example), and he was merely playing evenly against ETC!Fuji (KZ only works against ES and Heca was already narrowly broken at that point). Well, it's actually hard to pin down how the end of that match went.
Kite didn't gain an improvement, other than getting to use Viking Horn and Ohabu, in the G10 matches. On the other hand, Shiraishi didn't even play in the G10 matches, but that doesn't mean anything. The removal of the Gauntlet, while not a huge improvement, in my opinion, is more of an improvement than what Kite gained.
As I said in my opinion, I think that Shiraishi eventually wins. The score could range from 6-1 to 7-5 or 7-6.