Well, that's quite a comparison... It's one thing with goblins, another with Troglodytes — the latter have a significant advantage in hit points, damage, and quantity. If Grechkin could actually do anything with his goblins, they would be a starting lineup instead of Kreg or Gurney like now.
You could argue with that — Grechkin, while not as brutal as the Miner, still easily crushes low-tier conscripts ;)