it's because each coin has a distinct allocation btc gets 70% of the 75 million wings, ETH get 15%, and so on.

https://blog.wings.ai/get-ready-wings-dao-details-revealed-d8baaa33a33#.yahwmkk3d

Thanks for the calculator, but this is HORRIBLE. I can get more than 7 times more Wings with ETC than with BTC. Now I feel like I wasted my 5 BTC on this crowdfund (I could've spent 7 times less using some shitcoin and get the same amount of WINGS!). So don't give me this BS trying to justify this. This whole cryptocurrency allocation thing is a big FAIL and you know it.  I get that you guys were expecting some sort of equilibrium, but it is not going to happen (ESPECIALLY IF YOU HAVE A VERY MISLEADING ***EXCLUSIVE*** BONUS FOR BTC INVESTMENTS)! Please change the design and just allocate Wings based on $ value invested, otherwise this is a big FAIL and I have wasted 5 BTC. I feel really pissed off.

Disclaimer: I was not aware of the stupid allocation rules when investing. In fact, I actually didn't want to invest with BTC but with ETH, but then there was some stupid exclusive bonus for BTC investors. MISLEADING!

Example:
1 BTC investment (=$908) gives me 33,322 Wings
867.7 ETC investment (=$908) gives me 247,326 Wings

That's more than 7 times more WINGS for the same amount of dollars in value!

Of course I know that it wasn't your intention to get a situation like this. But this situation is reality now and you have to agree that it is massively unfair! I suggest to fix this poor ICO design, because this is just wrong. Please change WINGS allocation based on $ value invested, it is the only way to fix this big mess.

EDIT:
Thanks guys, now I felt like I had to invest 1 BTC worth of ETC to increase my WINGS/$ invested ratio, just so that I feel scammed just a little bit less.