A: Hey, who's that asshole who spends *a lot* of time in L2 and L3?
B: Oh, him? That's my friend Jim.
A: He rides like a machine.
B: Um, a machine that has trouble getting out of third gear anyhow...
Yeah, that will be interesting to nobody except for power training geeks, who will be looking at that chart, which shows the percentage of time I've spent riding at various power levels in the last month, and laughing their asses off.
FWIW, when I invite you out for a long ride and say I'm going to go at a steady L2 or L3, I really, really mean it.