I can't bet against Tai, and him being the underdog is always quite enticing with his recent rise to fame. The man is a star, even if his career will be somewhat short lived. The way he fights, basically makes his fights a coin toss, and I think Gane would know how to not get hit by him, since most of Tai's knockouts come from fighters just sitting in the pocket, and banging. Lewis found that out.
Gane will just look to touch him up, and then use his feet to get out of the way, and re-establish that distance. Tai will have to really work hard. I actually think that's how it's going to play out, and will probably be a rather boring fight. The value bet for me is it going the distance.
Tuivasa made his name on the top after defeating Lewis, he should have an opportunity to fight guys like Gane although he may not have a high chance of winning. If Gane wouldn't keep their distance while fighting Tai, there could be an upset once again. I'm assuming they are staging to fight Blaydes whoever wins which is a more solid fight to watch than this one.