<p>Unless someone here has taken classes at both UCLA and UC Berkeley, any measure if “rigor” would just be a guess. UCLA does have a lower division and upper division honors track, and there is a program for undergrads getting a MA in math. I’m not sure what Berkeley’s analogous programs are. UCLA also has an Actuarial track; I’m pretty sure Berkeley doesn’t.</p>
<p>In terms of prestige, Berkeley’s generally considered to be among the top 3 in the country, iirc. UCLA is usually around 10th, maybe a little better.</p>