Sepak Takraw really amazed my as I enjoy playing both hacky sack and volleyball (which seem like close derivatives) and I know how hard is to make 1 of those shots, let alone make a comeback or a continuous move. Those guys are real beasts. And its very regional as well. AFAIK only countries in the Thai/Phillipines region. Sure, there are teams from all over the world but a different class overall.
What makes it easy in Headis (in my eyes of course, not that I am that big of a sports person) is that you can use the actual table to support yourself reaching harder shots (something not allowed in ping-pong). Again, I am sure its much harder than it looks, it just lacks the technique and diversity of shots/moves for me. :rolleyes2