Nexus 5 vs G2 speed?

I'm a new G2 owner and its a huge upgrade from my S3 and easily the best phone I've owned. Tried the S4, S5 and M8 and I still think the G2 is better than all of them due to its tiny bezels, battery and screen.

I haven't used a Nexus 5 for more than a few minutes, just wondering how it would compare to the G2. Is it actually faster/smoother? I don't see any lag on my phone except in the dialer which can take a while to open.