I agree this "money in China" is a non issue. But I do want to point out that they are not equal.
Most pensions are not like IRAs or 401ks where you can pick funds and invest how you want. Most pensions (every job I have ever worked that had one was this way) are totally managed by someone else. You have no control whatsoever how the money is invested.
Most (all) 401ks and IRAs allow you to have total control. You pick the funds and investments. And most of them (all of them) have options for funds that only invest in U.S. companies. Often you will see them listed as US Small Cap, or US Large Cap, or something like that.
Having said that, I don't think it's a big deal if either of these guys have a mutual fund that invests in some Chinese company.
What IS a big deal is if you run for president based on your business experience, refuse to release a fair amount of your tax returns, have Swiss bank accounts and money stashed in the Cayman Islands, are known to be a "pioneer of outsourcing," and then attack someone else because their public pension happened to have a mutual fund that invested in China.