[Statikk HDM]

Hendrix like Mustaine isn't that good of a singer, in fact some people hate the way both Hendrix and Mustaine sing. But it does fit the music. Its not bad but it isn't great, its middle of the road to above average.
The songwriting is the same thing to me. Mustaine usually writes violent music and relies on the political rantings as a crutch, though he does have some more intelligent stuff. Hendrix is the same way to me, his lyrics and playstyle are usually very depressing and down in the dumps. So they're both okay writers and lyricists, though they do have some things that they fall back on when strapped for ideas(relationship problems and "bluesy" things for Jimi, over the top political ranting and ultraviolent songs for Mustaine). They both are like 8-9 in the playing range. There certainly is better out there but not often. For me they're both "sum of the whole is greater than the parts" type of musicians. On their own they aren't truly that great in any capacity, but put all their skills together and back them with other good players and they're great.