Well, I'm not a lawyer or nothing but I think the difference between the two situations is the case against Trump was a pile of hooey, and that against Obama and his crew, from what we read, is a real and a factual case of treason....seemingly so anyway.
If something isn't done to stop the political tomfoolery the rat-crats will continue to do their thing until all of DC is in the toilet. Well, it might be too late to prevent that but maybe we can salvage something. (?)
You may well be right about that, but it won't matter in terms of the immunity argument. That argument depends on the nature of the actions, not whether they were justified or done in good faith. Obama would have an even stronger immunity argument than did Trump.
But Clapper and the rest of them don't get immunity, so if the evidence is there, you could go after all of them. Though I don't think it constitutes "treason", there may be some other crime that fits better.