You're right , But eBTC give
95% Coins for airdrop and EXN Only give
1% 
Btw, Im buying some EXN in etherdelta and wait this coins hit the other exchanges.
That was the most stupid part that took over my attention !!!
How come spreading some Air Drop that low & keeping the 95% to himself / devs / don't know who else

?
The main reason for Air Drops is to get away from manipulation of the Coins / Tokens by the owner(s), this didn't happen in here, i was expecting much more token for every person who got the Air Drop, but hey i got only 100 lol, now i see some got 20 (WTF). Other have like 2k & 5k & even 100k according to Etherdelta (who the hell they are) !!!
This is not good even if the total supply is 1.000.000 as long as it's not air Dropped, no use for it.
May be i'm getting this is all wrong & the Dev(s) clarify this matter to me, waiting your reply.