50 50 means that you will get paid out 50% in Steem and Steem power.
If you go for Power Up you will receive 100% in Steem power.
Steem power makes your votes worth more and gives you more control. It takes 2 years to power down those Steem powers.
Steem is the currency you can sell immediately and receive money for in return.
Thank you!
@hidenseek It takes 2 years to power down? I thought it was over a 13 week period.
I guess you are right, my source is a bit outdated I think