Well?
I've got some houserules and some homebrewed base classes. I'd like to test them, but I don't know how.
The classes are just some base classes gestalted together and some other options tacked on. I want them to be tier 3. What do you suggest I should do to test them individually? A duel against a tier 3 class? I'm not sure about it. Same Game Test? But that's comparing the class to a Rogue, right?
Duels aren't really useful at all, as (A) 1-on-1 fights against PC-classed opponents aren't representative of all the sorts of challenges a class will face in real play and (B) a handful of combats won't give you enough data points for a good assessment. The SGT doesn't compare the class to a rogue, it measures success rate against a standard battery of encounters. A 50/50 success rate or thereabouts will generally put you in T3 territory, while the T1 casters have higher win rates and the T5 martial types lower win rates.
I'd suggest doing a SGT to see where their strengths and weaknesses are, then running a few one-shot games with the material if you can, emphasizing those strong and weak points if possible; that will give you a feel of how they work in play and will also give you an idea of how well each works in a party.