He has pascal cards though not AMD. Merged folding is DEFINITELY more profitable than ZEC or ETH mining on nVidia cards.
600k PPD ~= 22 CURE and 1750 FLDC = 0.0033BTC day card
450Sol/s ~= 0.002 BTC day card
...and that's being generous on Sol rate and conservative on PPD.
Actually, for the average of my cards, it's a LOT optimistic on the sols (370-390 for most of my cards even with optimised but still reliable overclocks, a couple of the high-clock Gigabytes hit a hair over 400) even without factoring in the rather high NiceHash fees, and a little optimistic on the PPD (most work units 560-600 kPPD range) as I don't push my 1070s all that hard on folding due to the higher power consumption and temperatures.
My current figuring with CURE at 6000 satoshi (yeah, it dropped back under that right now but will probably spike again) and the usual $1.30-$1.40 a day they're getting out of NiceHash and NOT figuring FLDC (the bloody fees getting that stuff OUT of the Counterparty crap eat a LOT of that profitability) make CURE pretty much a tossup with ZEC right now for my 1070 rigs.
Add in the FLDC and they're definitely more profitable with CURE at 5000 (which it's VERY close to even after the fallback today).
My small group of Maxwell cards (3 x 960, 2 x 950) are still doing other stuff - even ETH is more profitable on them.
Unless VEGA takes a huge step forward on folding vs anything previous in the AMD line, I'll probably never fold on AMD cards - they're almost more profitable to do GridCoin via MooWrapper (among other BOINC options) with than to Fold with.