Don't know if these are accurate, but very easy to understand
The data show that per capita GDP is growing by a slightly higher rate in California, and total GDP is growing slightly more in Texas due to higher growth in population (growth in more lower income people in Texas).
I can't vouch for the accuracy, I don't know the site
It is a bit more complex than that. But generally correct:
California's population growth over the past 5 years: +4.18%
California's GDP growth per capita over 5 years: +12.51%
California's real GDP growth(5 years): +17.21%
Keep in mind California also is home to Silicon Valley, Hollywood, and a substantial financial sector. It'd be interesting to see a breakdown by income brackets, I suspect much of the income growth happened in the $100k+/year demographic, while population growth happened elsewhere.
Texas' population growth over the past 5 years: +8.64%
Texas' GDP growth per capita over 5 years: +11.25%
Texas' real GDP growth(5 years): +20.87%
An income bracket breakdown would also be interesting for Texas, although it is fairly self-evident that yes, it appears that much of the growth happened in a lower income bracket. Except this also ignores things like purchasing power parity, and other factors as well.
That Texas boasted nearly double the population growth, and still managed to only be slightly behind California's per capita GDP growth number is rather spectacular IMO. Particularly so when you look at how closely matched(proportionally speaking) their growth numbers were in terms of simple GDP.