The only difference is that BTC is regarded much safer and faster than PayPal.
Paypal payment is almost instant. Bitcoin transaction takes several hours, depending on the fee you pay and how many transactions are ahead of yours.
Come on man, you know you can try better than that! In 99% cases you will get one confirmation within 15 minutes. I had instances that my Paypal payments were completely lost and stuck for days! And then numerous exchanging of emails with customer support, etc.. No thanks. I prefer to wait 15 minutes or less for 1 confirmation!