ETH and ETC look better on paper then BTC.
Look better from a profitability standpoint maybe, and maybe from a cost-to-mine standpoint, but as viable digital currencies? I think that only bitcoin can say, right now, that it looks good on paper for that usage. But then again this isn't a speculation thread about viable currencies, it's all about price.

It's interesting to see almost the same pattern in hash power as before the halving, we're still seeing big drops and then everything coming back at the end of the period. There's obviously a lot going on to drive price and hash power, but underlying it all seems to be some orchestrated effort and coordination between large farms playing with gear.
Sadly we'll likely never know for sure what makes it all happen...
kind of like five blind men and the elephant

real time
423224 (Main Chain) 2016-08-01 21:00:53
421344 (Main Chain) 2016-07-18 23:22:42
1880 blocks made
13 days are 13 x 144 = 1872 blocks
21 hours are 21 x 6 = 126 blocks
40 mins are 4 x 1 = 4
2002 blocks would be 0%
1880/2002 - 1 = -6.0939% real time
not certain but winner looks to be in the range below:
blindminer = -7.1
generalt = -6.8
ingiltere = -6.6
VRobb = -6.5
dukeneptun = -6.3
Psi = -6.2
ATguy = -6.0
DanielRo = -5.9
wpt1wpt1 = -5.8
testerman = -5.7
vg54dett = -5.6
vapourminer = -5.5
Veves1 = -5.4 vapourminer had -5.5 first
albertamining = -4.9
merelcoin = -4.8
gt_addict = -4.7