Crabs and ants are both easy to solo, it just much easier to go to WoE with another 2 friends who are after other coins. Its a lot more productive also. Theres lots of things that can and will on occasion go wrong soloing - bad pulls being the main one. Take a THF for TH and a RDM for Haste and cures and you have a nice team for the event.
I never said it was the most efficient or any easier than taking a group. I just said that it can be done [which was his question.]
Thanks for the responses. On a related note, is a Tobi+1 worth the effort? I'm considering putting the time in. It looks like most of it can be solo'ed, maybe needing to bring a friend or two along for Tammuz and the coins. Definitely do not have the time or connections for a Kannagi. How superior is Hi to Jin?
It destroys Jin in Abyssea. The highest Jin I've seen was 3.5k with RR, but most are around 1.5k-2k. A NIN I exp'd with a couple of times this week just one shots mobs from 90%-0% with his WoE katana doing 3k-4k. Outside its like Jin+2.
Its very worth it, especially if you have Razed Ruins, and can acquire the crit dmg+ gear.