First, that's an old and, IIRC, not good measurement of the MD. I'm not even sure if that was for the 2.0 revision. Realistically, the MD3.2 will measure much better than that. Overall it will have a more even response than the TH-02. The TH-02 has a big dip in the midrange. It might be correctable with mods, but I'm not sure if anyone has figured that out definitively.
The only thing the T50RP driver has real difficulties with is super low THD. I'm sure driver variance plays a role, as does the enclosure. Realistically, though, it's not enough to be too worried about relative to other headphones.
I really do love the TH-02. It's a very capable headphone for very little money, especially with some simple mods. But the Mad Dog, I'd say, is technically a better headphone across the board. One could still prefer the sound of the TH-02, though.
Measurements are a wonderful tool, but reading and correlating them to what we'll actually hear takes a lot of understanding of the many aspects behind it all. It's rarely ever a simple 1:1 thing. Whoever gave you that advice might be able to make some arguments given the context of those two measurements alone (or just on a price/performance value perspective, which I'd actually say is a valid proposition in reality), but that advice really won't correlate to reality. Like I said, it's not always 1:1 and simple.
Edited by hans030390 - 1/4/14 at 5:29am