I really hate how back-loaded the skirmish tracks are. Mathing it out it will take me a ridiculous amount of time to earn the legendaries from WvW on my current schedule. I could probably swing sPVP but wouldn't have much fun. It's kind of crazy that 3 chests in you're making almost double your first chest as far as those blasted tickets go (at least it feels that way).
sPVP is weird because it's bimodal, the 2 chests just before the top one have some pretty bad pip/ascended shard ratios but the top one I believe is slightly better. So if you're casual you earn things in a catchup amount of time, but if you no-life it, your'e rewarded too.
I like that the WvW tracks go faster as you rank up, but my rank won't hit cap before I get the tickets I need, and it'll probably be years before I see a significant increase in pips/tick. I might quit the game before that.
I dont want to talk about raiding but I'll mention raiding beats both PVP and WvW handily if you have a static that can reliably clear some bosses. Each boss would take a maximum of 10 minutes, and the value of a single LI/LD is pretty high in terms of time spent vs % completion of a legendary in that context vs other forms of progression.
I'm just starting to feel miffed because the most efficient progression comes from game modes I have trouble motivating myself to do (or finding people to do them with). And on paper, GW2 is raid or die if you consider the time progression value in the presence of a static and you're concerned about legendary armor progression. ON paper the resource caps are very similar in terms of gating, but in practice WvW and PVP are really grindy, with WvW being particularly atrocious.