Hmm this thread is confusing me a bit. One of the screenshots by OP showed yellow with some red for radio signal. Poor radio signal destroys the battery on any phone. I work at a supermarket and I'm constantly pulling lists from the basement and My OG Droid, DroidX, GNex, and Droid Maxx all 100-0 within 6 hours. Battery capacity didn't seem to have an affect when signal is poor. The WiFi question, I know that keeping it always on while sleeping will drain less than having it shut off. The reason being that Android is a very active OS, they did a great job lowering battery consumption too, I might add; having these periodic syncs go through WiFi usually uses less battery, unless in a very strong 4G area. Again, if you're 3 or less bars of 4G, it puts more of a strain on your battery.
Now I wouldn't be too concerned with WiFi showing up on battery stats because in the past, updates have had a history of reallocating battery usage to different categories. For example, notice how phone idle is very low. Well, before the update my phone idle battery % was much higher and the WiFi was much lower, and I believe that our previous version of Jellybean bundled the WiFi radio and the Idle together and showed it as one stat. 4.4 separated this to give a more accurate description of battery drain, that's why you're seeing it stand apart.