Bf109s are actually pretty bad examples as an E fighter.
What the 109s can do is build up E at an incredibly fast rate.
However, the problem is you have to spend all that E to fight in it. In 109s, altitude and speed advantage does not directly connect with any sort of decisive advantage due to horrible roll rate and compression.
So in 109s, you build E fast, spend about 60% of it in conventional maneuvering to get firing solution, and use the rest 40% to escape and climb again, rebuilding E. There is going to be a lot of close-quarter fights if you actually want to get a kill in the G-10.
Therefore, if we are talking about "E fighting" in terms of clean BnZ management, the Fw190D-9 comes highly recommended. With enough speed and altitude, the Fw190 is absolutely amazing.
ps) however, the 109s are capable of doing the more "tricky" E fighting.. the sort of fighting that lures enemies into death traps by out maneuvering/zooming him by teeney weeney little bits.