Both sides didn't have the best leaders, however the templars had far more bad rank and file troops than did the mages. They went on ethnic cleansing rampages for months...following bad order after bad order and knowing full well that what they were doing was illegal in the eyes of the chantry (and all this happened before the red lyrium thing). I have some respect for templars who left the order, like Lysette or Rylen. The rest got what they deserved.
Really/ just really? Did you actually DO the quests in the hinterlands and storm coast?
1) You get apostates that ritually murder people in their basement (storm coasts)
2) You get people who really don't have the ability to stop demons from possessing them (grand mother's cabin hinterlands) seems that isn't propaganda but a real danger not something invented to keep mages down.
3) A bunch of you strike out to become as gods according to a note in the hinterlands (the apostates in the hinterlands)
4) Ocularum skulls, when you find them in redcliffe there is a note about how they are killing tranquil to make them. Who is doing it? It can't be venetori putting them up in the hinterlands as their number are not high enough to put them all over ferelden yet And if trevinter mages are doing this it would be noticed, a bunch of trevinter soldiers or mages putting put these post all over ferelden would cause a reaction. yet free mages that have been given leave to stay in your country COULD move around relatively unnoticed putting up the Ocularum. Even if the mages don't know it is tranquil being killed (which I highly doubt as that many tranquil that go missing from your number is going to be noticed) you are putting Human/elf skulls on posts that means SOMEONE had to die. But no need to take a moral stand?
5) So many mages refused to stand up when they KNOW siding with trevinter is the wrong course of action. Its all 'well my leaders said we should do something i know is wrong so I am just going to do it.'
6) You encounter a mage summoning demons in a cave in the hinterlands
Here is just a list of what the mage rank and file do in DA:I no other sources just this one game. And there is a bunch of things the templar's do as well
1)Like kill a guy for using a shovel
2) Attack villagers for trading with mages
3) Attack a mage for having a picnic with an inquisition scout
4) Trap mages inside a building a burn them.
Yet these crimes as smaller scale than the mage crimes and there is SERIOUS push back by the Templars against the excesses. They try to co-op the templars and fail, the result is a purge which is bad enough that they start to create red templars outside the order. This happen regardless of what side you pick. There is no mage purge, they don't stand up to their leadership. The templars make bad choices and they are led astray but a significant enough portion of their rank and file refuse to continue slide down that slippery slope. They take a stand and are purged. What mages take a stand? i can't think of a single entry in the game that expresses that the mages were willing to risk their lives for the right thing. This purge by any ration look shows that the templars where better than the mages because they eventually took a stand against the evil direction their order was taking. The mages never do, they wilfully follow their leadership into evil even when they tell you that siding with tevinter mages is evil.