Since ogre thing was brought back up and a few other things I decided to post this. Lets look at why nature and demon are able to kill minions so fast while ogre/draenei have much harder times.
Real quick order of effective hunting: Nature/Demon - Draenei - Ogre
1: Ability to slow/chase wellThis is the biggest point in hunting minions. Minions are faster than almost everything a builder has (especially if given webbed feet). Both demon and nature have the ability to slow, while ogre and draenei lack it. If you can't slow/stop/catch up to the minion your army is food for the titan.
2: General cost/timeNature
- Can lumber very fast, and is fairly cheap to get an army out.
- Fast set up time for an army
- Requires very little gold
Demon
- Part of his upgrade path/job
- Is free after gold cost, which is low
Draenei
- Cheaper gold cost than demon
- Takes a fairly large toll on lumber
- Long set up time (with old way, not so much with the floating orb)
Ogre
- NO GOLD REQUIRED!!!!
- Requires a huge amount of lumber
- Long time for upgrades, as well as making the towers
3: UtilityDemon has the ability to nuke, as well as burning mana (from fel hound). Nature has an extremely powerful titan hunter along with blink on his army. Draenei has another awesome titan hunter, can set up army anywhere. Ogre is his towers..........
Kind of scattered, but should get the point across. The main point is that if the army cannot slow/stun/catch up to the minion, killing the minion is near impossible.