Eh, boxing is only good in the sense that it teaches you how to
A. Take a punch without being a bitch
B. Throw a punch without being a bitch
C. Learn how long your arm actually is when it comes to fighting
D. Do something in a fight other than end up in a shitty grapple
I'd put wrestling a lot higher than "defensive". I've always been told never go to ground unless you know exactly what you're doing, and while being punched hurts, nothing hits quite like the ground when your fat ass just got flipped by a 5 foot 4 Irish manlet and now he's going full on fucking spidermonkey.
also, yeah. Even if you don't end up running from a fight, being able to do 5 consequetive jumping jacks is probably beneficial to your career.