Looks to me like they're both the same product with links to a data sheet and a retail supplier. Appears the language use might be different than what I'm used to seeing. It states a "standard cure" time of 30 minutes and a "final set" time of 24 hours. Not always, but usually I see it stated the other way around, as either a "working time" or "set time" of 30 minutes and a "cure" or "full cure" in 24 hours.
Looks like the best substitute I've seen for people in areas that PL is not available.
For comparison; here's what (and how) the
PL Premium Datasheet says about curing times;