Originally Posted by
Snowraven
Technology
Tier 1 - Gnomes and Goblins - lasers and submarines, planes and robots, all engineered by them.
Tier 2 - Dwarves - build the siege tanks, cannons, rifles, planes etc. They are not as advanced as to build lasers though.
Tier 3 - Draenei - Draenei reverse-engineered some naaru tech, but they're still not so advanced in it yet, in the future they might go to tier 1, but for now they can't build a naaru ship for example.
Tier 4 - Humans, Forsaken, Worgen, Pandaren, Blood elves - Average tier. Basically those that build some machines of war and use rifles made by them. Blood elves have also made arcane constructs, but they are not at the draenei levels due to the constructs being part magic, part technology.
Tier 5 - Night elves, Orcs - both build some engines of war (glaive thrower and demolisher) but not much else besides that. Night elves rely more on their ancients, wisps and magic while orcs rely on goblins and power.
Tier 6 - Trolls and Tauren - The best technology the tauren invented is the elevator. It's not horrible, but not great either. The machines of war of both these races are primitive versions of those of other races. They sometimes use rifles, bot they are not manufactured by them most times.