ronnie would kick the motherliving crap out of most 43 year old American males.
Would he bode well against a trained UFC guy? Probably not. He'd gas. But most white collar douchebags would also gas quickly, and Ronnie would still have a cardio base, the ability to deadlift the guy and 2 of his friends, and a 150 pound LBM advantage to knock the wind out of whoever he ends up on the ground with