Like what? Let's go over the stuff you named in your previous post:
-Only Yukimura and Sanada knew about Tezuka sealing Hyakuren (this actually has nothing to do with Yanagi, but I'll include it anyway).
-> Unlike everyone else, they knew he had it because he had used it against them before. Then they probably kept a close eye on him during their entire middle school time and he didn't use it again. Thinking that he sealed it seems like a likely conclusion.
-Higa's strength.
-> Higa won in Kyuushu, and Rikkai in general seemed well informed when it came to the winners of the other regionals. They also knew exactly about what made Murigaoka strong for instance. This is easily explained by them sending people to watch those matches.
-Foreigners.
-> Rikkai managed to win their QF match before it began to rain, so while everyone else still had to finish those matches, they could simply watch. It'd make sense if they checked out their next opponent, and saw the foreigners sitting on the bench or something. Yanagi could probably get some info on them between the QF and SF.
So, the first example has nothing to do with Yanagi, the second one isn't exclusive to him. You have a point on the third one (although he did have time to gather some data).
Anyway to answer the actual question, Yanagi probably has superior stats on top of the data. If he played against someone with equal or higher stats, it'd probably look more like Inui's matches against Echizen or Tezuka. On the other hand, we've also seen that Kirihara is a pretty dangerous fellow when you don't have that data, and Tachibana just doesn't have it.
