The Guide is insightful to know how to associate what abilities are best to use with the splattershot jr., but the guide isn't well organized and doesn't go through why the "other good abilities" are useful. They're kind of just thrown out there for people to assume how those perks help the jr. specifically. The last problem I have with this guide is how you never talk about the jr's efficiency, because it's the best in the game. So I wouldn't recommend sub saver if you're not throwing two bombs at once.
Sorry if I ranted a bit, but this guide could be better if you organized it a bit more and explained why you selected your perks a bit deeper. If you fix those two things, this guide would be a lot better and help people learn about the jr's capacity.