Cozzicon, first let me say I highly admire your work and your writings, but...
Hmmm... To be fair, I haven't used the syringe method yet, but that is largely because I have an irrational phobia of syringes, stemming from a severe childhood trauma.
However, I have ordered one in the interest of science, and with my wife's help I intend to blunt the tip with a Dremel tool as soon as it arrives, hopefully rendering it mostly harmless, although I will be sleeping with one eye open just in case.
As for the capacity being more one way than another, I suppose this is important to some people, but not really to me. If I can get 16 drops into it, which I do all the time with my method, without having to pop off the top, dig out the next barrier, and then use a syringe JUST to get an extra four drops in there, I'll just drip into the battery hole, thanks.
But just to counter your non-hostile argument with a non-hostile counter-argument, the talk of dryness seems to imply that one of these methods will not get the filler material saturated. For those reading these comments, let me assure you that the entire filler inside gets as wet as you care to get it using either method. What may help most with maximizing saturation would be to tap the mouthpiece of the carto gently on the table every few drops. This helps to break up air bubbles and force the juice into the filler material. I do four drops in, four taps, four drops, four taps, up to 16 drops usually. Beyond that you risk forcing excess liquid into the mouthpiece, where frankly I'd rather not have it. If I wanted to drink the juice, I wouldn't need a battery!
The cartomizers are designed, of necessity, to have air flow through them, primarily in the direction of the mouth. The air holes around the battery connector are the intakes. Air flows through the wicking and filler material, carrying with it the vapors of the burning juice. If air can pass all the way through from the battery end to the mouth end, juice can too. And it does.
The only debate here is which method is better. As cozzicon said, it's "subjective." It's really a matter of preference. My reason for arguing the case for two different simple methods of refilling genuine Joye 510 cartomizers in ways that do not require disassembly of any parts, and without requiring any tools, is that I want to dispel a widely held myth that they can't be filled without a syringe. We've proved it, and it's been confirmed by the forum scientists

so I'm happy!