MK7 GTI vs STI

I was toying with an STI. I was about 2 car lengths behind him @ 55mph when he hit the gas and then I followed. I pulled a couple cars on him through 4th gear and shut it down when I got beside him (about 120mph)... but he just kept going lol. I tried flashing him down to do a side by side run but it looked like he didn't want anymore, just kept going 120MPH+ down the hwy and I didn't want any part of that.
I'm APR stage 2+ at about 300whp/370WTQ @ 3100lbs. No idea what mods the STI hatch had but it was lowered.