If you had a manaul id say it would be close. An automatic grand am GT has to do around a flat 16@86mph or os. I am new here and not totally familar with focus's but, an automatic focus does mid 17's? If i remember right the grand am has 170hp 210ft/lbs of torque.
If you want to beat him, the cheapest way would be to get a wet NX nitrous kit. run a 50 shot or something. these kits can be had off ebay for like 450$. I installed my nitrous kit myself on my mother Hyundai elantra and im a guy that doesn't change his own oil. If your running a 50shot it should be close, but id say you'd take him.
edit: again i dont know how well the zetec motor holds up, but you could invest alittle more and get a progressive nitrous controller. Then you could run higher amounts of nitrous safer. You could do low 15's probably. Remember to installed a colder range spark plug for this and 93 octane if possible
03 Nissan Sentra Se-R Spec V