I had to watch the clip a few times to see if there is the "potential" for power or if it's simply a very well rehearsed and choreographed demonstration. For some, it might be easy to quickly judge and say, "yah that's crap" simply because it's not your typical MMA or muay thai stuff... think of typical street brawler wailing at a heavy bag..but upon closer inspection, you can see his shoulder pops back just a slight bit upon impact of his punch - goes to show the lack of power alignment.
Others may look at the flow and see how the joints (shoulders, spine, elbow, legs) are aligned with the attacks - so that even though it's "weak" on the video - it can have great potential for damaging the attacker - think as if it's Bruce Lee demonstrating some cool moves slowly and with no power. You can still see the way his body moves, that there's something rooted and potentially powerful.
So what do you see? do you see these students as "potentially powerful" or "fairly weak"?
I watched it a few times already..and my conclusion - it's weak. Although they have the potential to tweak their structure/alignment/positioning, etc and it can be greatly improved. They got the flow down - now it's adding the power.
Your thoughts?
Until then.