There is a handy plugin for just that purpose; Combat Analysis.
I've had it for a long time so don't recall where to get it and how to install, but hopefully either some helpful person will say here or our old friend Google will provide the info.
It provides a breakdown of damage dealt, damage taken, heals recieved; each of these list overall amount per second and can be broken down into individual skills. It also lists the min damage, max damage, # and % of critical hits and devastates, damage type... a lot of info there.
It is quite useful for testing skill damage and whatnot.
Spear sweep itself works, though I don't know how it compares to resolution other than having about half the radius. Not sure about quick sweep; IIRC it has been mentioned by another player that it does not work, though I haven't tested it myself.
Gremblus, Seuer, Grelob, and various others of Arkenstone