It's a bit of a trade off though, the 2700rpm to get the lower temps v the 43.1dBA at 1m is quite drastic and at the lower 1400rpm it barely exceeds or matches the TU120E at 1200rpm.
I would be interested to have a play with one none the less.
It's hard to compare the two heatsinks when the NV120's fan would be a custom job to replace. The only way you could really compare them is with the same fan strapped to them.