score:3
The boarding pass will be fine, nobody will check for a e-ticket. (In fact, my last few easyjet bookings have them sending me no such thing, so not quite sure how you got one).
Source: Travelled with Easyjet recently.
Additional source, Easyjet website:
Do I get a flight ticket from easyJet?
easyJet is a ticketless airline. On completion of your booking you will receive confirmation of the flight details via email. 30 days before your flight you will be able to check in online and print your boarding pass or download it using our mobile app before going to the airport.
For more information on how to check in online please visit our dedicated online check in page.