"Cashes out" seems rather vague.
In one case, we have a mind to attribute purpose to - and in the other we don't.
However, both are complex adapted systems, produced by other, larger complex adapted systems as part of an optimisation process. If that is all we mean by "purpose", these would be classified in much the same way.
I didn't like the "No Teleology!" link much - it seemed pointless.
I use the term "cashes out" because that's the lingo here. But I'll expand out the two claims to show how they're different in a crucial way.
In the case of the heart's purpose, the statement means, "Historically, genes were copied to the next generation in proportion to the extent to which they enhanced the capability/tendency of organisms whose DNA had that gene to make another organism with that gene. At an organism's present state, a gene complex causes a heart to exist, which causes blood to increase in pressure at one point in its cir...
Sweet, there's another Bloggingheads episode with Eliezer.
Bloggingheads: Robert Wright and Eliezer Yudkowsky: Science Saturday: Purposes and Futures