Hi,
Yes, the ATC in DCS is, to put it politely, 'crap', but what it says is quite simple: On the one hand, it gives you the altimeter barometric pressure, which you can/must set here:
and on the other hand it tells you from which runway you should start and on which you should land. But you can also find this information under Mods\campaigns\F-14 Zone 5\Doc. It's always worth taking a look here