This question fails in so many ways. Let's see if I can cover them all...
First, the obvious: The Kochs are Americans trying to influence American politics. Soros is a Hungarian. I'm fairly certain than more than 200 countries around the world would have major problems with an American going to their country and pouring cash upon cash into changing their nation. There was a time when the American Left would have had a problem with it happening here, too. Not for Soros, though, because you Useful Idiots agree with his direction.
Second, the Kochs don;t have a history of collapsing nations for their own personal gain like Soros does. Soros has been at least tangentially or directly involved in the economic troubles of many nations, among which are: Thailand, England, Georgia, Poland, Hungary, Czechoslovakia, Ukraine, Soviet Union, Kazakhstan, Turkmenistan, Belarus, Zimbabwe, and now the United States.
In one of his books, he even admitted that he enjoys doing it.
Thirdly, the Kochs have never been charged as economic terrorists in conjunction to the pillaging of failing economies. Malaysia directly blamed him for causing their financial collapse and Thailand labeled him an “economic war criminal” who “sucks the blood from the people.” He was caught, charged, and convicted of insider trading in France in the early 2000's, but France surrendered (again) in their war on him, letting him off with a $3 million slap on the wrist.
A theory has also been floated that he was behind the $550 billion electronic run on the banks which started the United States' near collapse in 2008. The indesputable fact is that the timing of the 2008 near-collapse was extremely, shall we say, "fortunate" for Obama. Despite campaign promises to investigate, the Administration has never even sniffed in the direction of what happened there. Unfortunately, with no desire to investigate what happened by a friendly Administration, we'll likely never know if he was involved or not.
Third, you're muddling all of your money facts: revenues for profit, wealth for liquid capital. The bottom line is that the Kochs don't TIE for #24. They're #24, COMBINED. There's a huge difference. Individually, they both fall well below Soros. Also, you're ignoring the one area that's most important to Soros' influence: how much money he has indirect control of. Where Soros doesn't contribute directly to candidates, it is a flat out lie that the Kochs fund more conservative groups than Soros funds Progressive ones. You can run down the short list and it's readily apparent: Kochs: Tea Party (of which, there is no single central group), with the possibility of other 501(c) organizations. Soros, on the other hand, is directly tied to THE Open Society Institute, ACORN, Tides Foundation, the Arab American Institute, The Bill of Rights Defense Committee, The Mexican American Legal Defense and Educational Fund, La Raza, NAACP, The Sentencing Project, Critical Resistance, The Leadership Conference on Civil and Human Rights, The Center for Community Change, The Gamaliel Foundation, People for the American Way, Democracy For America, the crypto-socialist organization called The Midwest Academy, The Center for Economic and Policy Research, The Center on Budget and Policy Priorities, The Economic Policy Institute, The Ella Baker Center for Human Rights (founded by Communist and former Obama Administration official Van Jones)...
I could continue, but I think I made my point.
Bottom line, the Kochs aren't exactly pure and clean as the wind driven snow, but they're not charged with being economic terrorists, insider trading felons, and (most importantly) they're Americans taking an active role in American politics, not foreigners.