"dual core" does what you see, enables dolphin to use 2 cores or more (on cpus that have 2 or more cores 
), and "lock threads to cores" just locks both threads of dolphin to 2 cores of the cpu (instead of letting the OS handle it, which could change the threads to whichever core it pleases )
), and "lock threads to cores" just locks both threads of dolphin to 2 cores of the cpu (instead of letting the OS handle it, which could change the threads to whichever core it pleases )