Newbie Help - Award Saver + CreditCard Miles

Hi guys i recently started looking into award miles and it's so confusing. What I understand so far:

1) I can use the miles from my mileage plus account to redeem for future tickets. For example a round trip from jfk/pvg earned me ~15k miles, considering the same round trip only cost ~60k miles in Award Saver (~120k miles in Standard Award) , this seems insanely good.

This part is clear to me, i can use the miles I earned from buying plane tickets to redeem future plane tickets, and if I can select Award Saver those tickets can be redeemed at 50% off!!!

2) Now the confusing part are the credit card miles. You have the capital one venture award, chase sapphire, and united mileage plus card. Each offers various miles award for $ spent.

The part i am very confused about: Are those credit card miles EQUAL OR MAP 1:1 to the miles in my mileage plus account?

For example if i have 60k miles in my credit card reward program, can I goto my mileage plus account, then redeem those *CREDIT CARD* miles for tickets using their Award Saver program?

Every help page just says use credit card miles to buy tickets, but i want to know if those credit card miles can be used towards an Award Saver ticket just like mileage plus miles, or are they just $1 off a purchase for every 100 miles (which is same as reward points and no good)

How exactly does the credit card miles link/transfer back into the miles in my mileage plus account? Does each credit card's "miles" have different meaning?



Thanks!