Tohu and SJ are nowhere near their performance from last year and I can't see them getting there. Add to that it took them a fair chunk of the season to get to that level plus a fairly favourable draw in the back half of the season, as well as not beating any of the other top 4 teams. TMM/CHT/Walker combo has has 4 games together plus Webster dicking around putting walker at 12 for one game. Still won't hit the levels of SJ/Tohu from last season but we have definitely missed a trick not continuing with that combo in the storm and titans game. As a coach you can't continue to pick players based on last years form when everyone could see this years form had declined so farFonzie does an incredible job explaining why Webby has persisted with Tohu/SJ this season even when they've been a bit beat up, in the latest TWL podcast. Even if you're not a podcast listener I'd 100% recommend having a listen.
Short version is, we don't make the top 4 last year without Tohu/SJ (and AFB) playing the way they did. We won't make a deep run this year without them either, so he's been persisting in the hope we can get it right. TMM/Walker are good but not near the level of Tohu/SJ last year, and never will be. Unfortunately it didn't workout as he would have hoped and we're likely in a worse spot for it.
The way Fonzie explains it is so much better though.