Is there even a difference between regular armor mods and class mods?

[Enfo]

I have yet to see anything in particular to be different between the different types of armor mods and class mods.

Are the class type just premade for future addons?

[Collussus]

I have yet to see anything in particular to be different between the different types of armor mods and class mods.

Are the class type just premade for future addons?

I have found that most of them have a major difference of 1% of just 1 extra.

[JHarlequin]

When they are white quality, there is very little difference. When they are green or blue quality, you can get them available for a lower level frame and at a slightly stronger value. Still it's a minor percentage and you only would really notice a massive difference if you compared a level 30 warframe mod with a level 30 class specific mod.