How many percent gaps of rate difference, in average?
What would be your base line to determine that against?
One of the possible conversions would be depositing EOS to get ETH.
Current markets for EOS/ETH range from 0.019926 (hotbit) over 0.020182 (fatbtc), (Bibox) 0.020023, all the way up to 0.02004713 (DigiFinex).
That's nearly a 1% difference in exchange prices depending on where you look up the rate already. Which of those do you use if you attempt to determine the "percent gaps" for CoinSwitch?
As of right now, depositing EOS for ETH would give you a rate of 0.01986442 using CoinSwitch.
Which one of the previously listed rates you compare that to makes a big difference in the "percent gap" you get as a result of your calculation.