Yes it is lol. Welcome to the N5 buddy. I did the same thing once I got mine. It came out of the box, plugged into PC and unlocked. Don't think I even booted it up stock once...
That's a nice upgrade. I went though 4 phones in the same time, lol. I bet that big of a jump is a lot more noticeable than the incremental performance boosts I'm used to barely noticing.