I managed too, but the problem is a lot of people who didn't could have been great developers. Your ability/tolerance to math/physics isn't proportional to your ability to become a good programmer (not any more than any other mentally taxing activity at least).
True. I don't regret attending (and passing!) all those math+physics lectures to be honest. All the stuff I missed in uni regarding software engineering and programming I learnt them quite fast and easy in my own time (e.g., at least for me after passing an exam full of Cauchy-Riemann Equations and friends, it was quite easy for me to learn Java or to go through books like TCP/IP Illustrated or The Art of Unix Programming in my own time).