While your phone may run systemd, modern phones are pretty powerful compared to platforms traditionally considered "embedded".
It's also an extremely niché phone... Witch I seriously wanted to try out, but couldn't because it was actually impossible for me to buy.
It's definitively not representative for phones in general, and certainly not for embedded Linux as a wider term.
Edit: Things might be changing though.
For instance my Netgear NAS used to run a custom Debian-derivative based on Debian 7 (which used sysvinit). But I discoverd today that after some recent updates it's now based on Debian 8 (which ships with systemd instead).
Based on that, I could produce the following plot[1], on a "embedded" device. Which I now know spends a tremendous 42 seconds booting the kernel. I guess it contemplates life, the universe and everything before moving along :)
