I don't feel this way. What are some neat features of Chrome Dev Tools that I might not be taking advantage of? One I know of is the ability to inspect WebSocket connections, I really wish Firefox had that.
Network throttling is present, but only in responsive design mode. And responsive design mode has the same features with Chrome, but its a bit wonky at the moment.
I think you should open a bug report about this at bugzilla.mozilla.org I did the same for several feature requests or ideas and the firefox developers and community is very nice and responsive (I'd say most of my bug reports were fixed within days/weeks whereas feature request usuallly takes longer - but is always consider).