That split is better than mine, and it also catches a sloppiness in what I wrote earlier: the 145 sat/kW was my own sweeper's ceiling, a budget divided by transaction weight. A tower does not run that...
One piece I'm fairly sure of: HTLCs under the dust limit never become outputs at all. They're trimmed off the commitment and end up as fee, so there's nothing to sweep and nobody "keeps" them. Your open question is the band just above dust, where the output exists but costs more to claim than it's worth at the tower's fixed rate. That's the loop worth reading before anyone claims it. "Nobody here has weighed a real justice tx" might be the most honest line in this whole thread.