The Blackberry playbook is running a QNX Operating system that is only OS 2.1 yet the new phones will be BB10. BB10 is 476% greater than OS 2.1. Therefore one can expect 476% greater performance, features and experience from the new phones over the playbook.
why so confident?
Well RIM is a company that is a straight shooter and would never, ever over promise and under deliver. If they believe the phones are BB10 than they have inside knowledge of just how revolutionary the devices will be. Otherwise they would have named the phones BB3 or QNX or BBX.