Oh it certainly is about more than sales, and at this point in time, I put a lot more stock into Destrose's contributions than I did when this article was made 3 years ago, to the point that if I had remade this, they'd certainly have a place somewhere. The bands that came out of them (as you'll notice some are also honorable mentions) have progressed further in the years since this was written, some significantly. While Destrose's run wasn't the longest they're quite important and I'd probably find a spot for them in the high 30s or low 40s, jumping a bunch of bands whose impact had fizzled a bit by comparison.
Thing is, I wasn't exactly sure what to make of a lot of the bands that came out of Destrose initially, unaware of what several would actually go on to achieve. Of course, Mary's Blood are and were already excellent (they'd have a top 50 spot by now too), Lovebites (who would also have a place) have rocketed to success and so on.
Your point stands though, and all I can say is they'd have a place if I were writing this now instead of a few years ago.