In my eyes they are both good and there is no one that is better, they both have their up and down sides if you ask me.
I love them both and I'm also using them both these days.
I think they have their strength and flaws. But if you compare the two people who own PayPal will use PayPal while those who owned bitcoin will use bitcoin. The deciding factor would be the site where they are going to use their credit. If the site doesn't accept bitcoin, even with you having million of bitcoin in the stash, you will be a force to use PayPal and vice versa. The good thing with PayPal is that it is recognised by more stores than bitcoin.
But the strength of bitcoin will have more weight over PayPal. If a site does not accept bitcoin payments, we will be having enormous alternative ways to use bitcoin to pay with them, one good example must be using bitcoin debit cards in those cases.
In my personal experience and with the respect to the options I'm having, I will be able to pay everywhere using bitcoin payment system. In some sites I will be using direct bitcoin payments and in some other I will be using bitcoin debit cards.
Yeah for now there is some alternative.. to use bitcoin. but some stores online are still not accepting and we need to use paypal.. the good thing in paypal there is a buyers protection that they can reverse payment when they are satisfied.. thats why amazon still not accepting it.
But i will still stay in bitcoin because i am living with bitcoin and sometimes i using paypal for other acitivites like marketing.. the fee for transaction is high than bitcoin..