So, I tried a little experiment the other day. I loaded the WebGL aquarium on my Cosmo, Astro and a work RAZR (8+ gen 1)
1024x1024 canvas, 10000 fish, duckduckgo browser.
Cosmo - 9 fps
Astro - 23 fps
Razr - 37 fps
So the Astro, in a real world test is 2.5 times faster than Cosmo. The latest and greatest is only around 60% faster. Not bad I think.