LOL... its a good point to have some sort of wiki, but keeping it up to date would be a chore.. Best to look atthe reserach tree and see stuff at the end of the tree is more powerful than the rest. Atm alot of people like the Sniper, Boltgun and Lasgun as weapons, and well the armor us better than anything in vanilla...

If that doesn't give you enough information, looking at the mod files will give you everything you could possibly want to know.

I could help keeping it uptoday.... Probably

weapon wise: the sniper is powerful, but you need a special base layout for it's range to come into effect (also not good for hunting since it fires at low-medium instead of long range). plasma is the go to weapon against mechanoids, grenade launcher for anything else (thud artillery once you can build it). Lasgun is a really powerful midgame weapon.

You can actually click in the "i" ingame in the crafting menu (queue up a job and then click on the "i" next to it, it'll give you the weapon stats). There's also a help mod which gives allows you to see the stats there.