That was the same Bootloader screen shown on your image as I had when I fast booted into fastboot for the first time.
It may say Bootloader unlocked, but I assure you that it's not if you have updated to 4.4.2
You HAVE to boot into fast boot again and enter your 16 digit unlock code to unlock the Bootloader. The root genius 184.108.40.206 will then root your phone and install supersu. If you don't enter your unlock code, you will not be rooted.
Just for clarity, on 4.2.2 I didn't need to unlock Bootloader........ 4.4.2 you DEFINITELY have to first.