The bonus isn't actually capped at 275% either, I've had it up to ~289% on a recorded test run. (which means the match was worth 389% of its original value) A closer guess would be about 300%, but it could go higher, albeit unpractical to ever reach. Not super relevant, just a nitpick.
This is a great vid, I'm really happy with how it turned out. Voice tutorials can be a real disaster, but I wasn't counting on Super Clear Brit Voice to make it so easy to understand! It's amazing how many of the same exact techniques we use without ever having actually discussed them. If you're struggling with Pusher, watch this vid. The easy form gravity builds and the notion of funneling (pushing one color right and one color left, as per the Match 21 section) are especially valuable to intermediate players.