The Filipino "boy" pictured above is the porn star Brandon Lee. He's the only real star among mainstream Asian gay porn that I've seen. He definitely has a sizeable tool.
But overall it's undeniable that Asians (east Asians) rarely have large cocks, i.e. in excess of 7 inches. If you don't believe it, go to x-tube or a site like it, and search for Asian cock. You'll get lots of hits, but as you start to go through, you will not find any monster dicks. A few 6 inchers, but that's about it. Now search for huge cocks and you'll find plenty -- all white or black. It's not scientific, but it's some indication.
Brandon Lee is about the only Asian in gay porn who could be called "well-endowed". That's why he's a star.