There is no way to compare BCC to ETH. BCC is just a clone of Bitcoin.
ETH has been developing for three years. No doubt the winner is ETH.
You're pretty much right though with the longterm reputation from Ethereum is good there's also a large amount of reputable people that are mining the other coin (BCC).
The people that are mining the coin know how to read the spec's of a certain coin and they don't just mine any coin out there because it won't be as profitable when compared to mining Bitcoin.
Even though you're right about people will be in favor of Ethereum because of the development as well, the other facts should be taken into consideration as well.
I prefer to use Ethereum rather than BCC.