Lets play Same but Different, Wiglaf and Brok Ironfist edition!!
Same: both Warriors with 2/2/1 statline. Both overcosted at 5 & 6 resources respectively (1 resource buying you a single ). Their abilities technically both fall into the resource acceleration category.
Different: their abilities are pretty much on extreme ends of the spectrum on usefulness. Wiglaf has built in resource acceleration and readying; he'd only need card draw for the holy trinity of deck design (even though the included-in-pack Ancestral Armor is the clear match).
Brok... let me tell you the tale of his glory (based on a true story). In this alternate history of Middle Earth, at the Bridge of Khazad-dum, Dáin Ironfoot sacrifices (discards) himself in hopes of enabling his fellow's escape from their confrontation with The Balrog. Suddenly, from the shadows, the pipe smoking Foreman of the Pre-errata Zigil Miner Dwarfs (because I always thought they wanted to unionize and who better to oust from the top of their hierarchy, aka deck; well, I guess Beorn... but we're losing focus, back to the narrative!) emerges from a nearby passageway. Inspired by his striking visage, the weary Gandalf takes a reflective drag from his own Wizard Pipe and summons the Flame of Anor to discard a second hallucinatory image of their savior dwarf to lead the bedraggled fellowship to land an Ironfisted blow and vanquish the ancient evil (to the Victory Display, cha-ching)!
(Note: the adept player has 2 core sets and has carefully planned the use of both Brok Ironfists for this very purpose)
So ya, they're similar, but different. But overall Wiglaf is a really solid defender and if you were jumping into the game at this cycle and/or have a limited card pool he's right up there with about as good as it gets.