I might/might not have been that poster, but since the 14459 has a greater capacity that would seem to have been a logical conclusion at the time, wouldn't it?
However several 14459's, a Classic and P1 have since been dissected, and a PL14610 with media measurement taken and posted, somewhat surprisingly the 14610 has more media. The kicker here though is, while both are rated at 99.9%, the PL14459 is rated @ 20um while the PL14610 @ 40um. But, since finding more media in the latter, I lean towards it, but that's just me.
fwiw, I've used and have a stash of both, and don't think you can go wrong with either. And, either would be preferable to the shorty 14612, imo.