I think you're missing several key points, but most importantly Hunter was going to be sentenced soon and it could have involved prison time. I'm not sure the cases that involved Trump would have resulted in prison time.
You should try to keep an open mind, follow some conservative American media for informational purposes and try not to frame everything within the narrow confines of partisan politics. The amount of money at stake in Washington D.C. is disgusting. As someone smarter than me as surely said, as the stakes get higher the uglier things get.
Here's what you don't understand about Hunter. If he was guilty, I think he should serve jail time. He was guilty. But, like Trump, this was a charge that is rarely prosecuted, so I don't feel too bad about him walking, considering Trump was facing significantly more severe charges.
As for Trump, he would have faced jail time. There is no ifs ands or buts about it. Jack Smith's case, at least the parts we were allowed to see, paint a very damning picture of his actions in the election interference case. The documents case could be worse, especially if they found he sold state secrets (which has been speculated, but I suspect he didn't).
The problem with all this is that the Supreme Court has basically said President's are mostly above the law. That is a major fucking problem, and one that we can all be sure Trump will exploit to his benefit.
As for following conservative media, buddy, I worked in conservative media. I know how they role. I know how they ignore negative stories on conservatives and torque up the bad ones for liberals. That was the only media outlet I worked at where political heads had final say on copy. Never got any push back from any other place. And, the reality here is that conservative media is all about the partisan politics (with very few exceptions). It's bad in Canada, even worse in the US.