And I think this is a perfect example of graphs not being good crystal balls.
The T70, to me, were completely gone below ~250hz - the MDR-F1 have more bass impact (that's saying something!), and to add insult, they're clashy/piercing up-top, and have fairly cold/dry/lifeless/artificial/etc sounding mids. Really just an awful headphone overall. Comfortable, good isolation, and that's about it; they're massively overpriced for the sound/build quality they offer, and Beyer's CS is (IME) miserable. I'd stay away.
I'm unfamiliar with the 1350, but if you want some suggestions for decently balanced, full-size, closed cans:
- Kenwood KH-K1000
- Audio-Technica ATH-W1000X or A900X
- Denon AH-D2000 (no thoughts/comments on AH-D600)
- Koss MV1 (if you want a bright/punchy sound in a closed headphone (this is what I assume you're after with the T70), these are where I'd point you)
I'd even suggest the AKG K550 (which I found to be fairly ho-hum) over the T70; they feel better in-hand, look better, and are more balanced sounding - they're also easier to drive if you have a portable device. With both the K550 and ATs, fit/seal should be considered - but I'm guessing at least one of them will fit you without much fuss. You might also look at the Koss PRO4/AA, assuming the weight isn't too much of a concern for you - surprisingly well executed full-size cans, assuming you want a full/rich spin on a relatively balanced set of cans (relatively minimal soundstaging capabilities, but what do you expect?).