Hello, FTB is like Tekkit but has the permission of all the mod owners, whereas tekkit didn't. Also FTB is not stuck in 1.2.5 it always keeps up to date with the newest updates. I hope this helped. peace out.
It's pretty much Tekkit or Technic only with less people whining like children about permissions. Always seemed like a bad idea to me, Technic and Tekkit are pretty much the standard for tech mod packs at this point and FtB doesn't actually offer much for people to get it over the other 2 after they update.
So basically Technic with a worse launcher, different block id distribution, less drama, and faster updates since they aren't just waiting for Redpower to be updated first.
Ok, the launcher is better then I remember and offers multiple mod packs now, one of the things Technic had over it before. So they're a bit more equal then I thought.
While FtB is making strides towards being a viable alternative Tekkit is still seen as a go to for a techmod based server that's easy to set up.