Meter Perception at Different Tempo

Today we're in Music in Southeast Asia, and this piece came up, which most of us grad students distinctively perceived as duple meter but Ben Pachter argued that it is triple. At first I didn't get it, but then I thought about the Irish fiddle melody, and then I realized this is really triple grouped into a higher level of four beats, so it's triple basically rather than a dotted duple. The tricky thing is that (1) the faster tempo here created the confusion. At a slower tempo (such as French suite) and with the absence of the higher level duple grouping, there is no chance that we can misperceived it. (2)The triplets did not really appear in this example, so the confusion.

There is something here between the interplay of tempo and rhythm perception.