Basically, that means that if you want non-stop to Europe, you're going to pay a premium because even if you aren't on Delta, you are still on SkyTeam.  In Denver at least the non-stop TATL flights involve other non-Star Alliance airlines with Icelandair, Norwegian and British Airways - so that injects a little bit of competition.  Bottom line, Delta gets to control prices to Europe out of SLC (even one stops in many cases).

Out of SLC to Asia, Delta has no non-stops, so they have somewhat less leverage in controlling price because you can connect through another alliance hub such as Chicago, San Francisco for Star Alliance or Dallas, LAX or Chicago on Oneworld.  That opens up more competition.

And much like SARS, there is definitely a demand hit to Asia which goes well beyond the borders of China and will last outlast the epidemic.  I lived in Korea during SARS, and Korean Air and Asiana both took hits and were offering cheaps flights due to a Chinese illness that only recorded something like three cases in the ROK and no deaths.  East Asia routes are highly interconnected, and paranoia doesn't respect borders.