It is not exactly comparable as we are not in the same niche and have different goals.

If you are asking specification wise:

eBTC:

Type: ERC20 Token
Supply: 21,000,000
Decimals: 8

Dash Cash:

Type: ERC20 Token
Supply: 900,000
Decimals: 18



eBTC will be used for creating smart contracts while Dash Cash will be used on DashEx e-commerce platform.