Re: I'm surprised to find out that Russell Mael voice isn't particularly high
In my experience, there's not a ton of correlation between a man's normal singing range and his falsetto range. Over my years singing since my voice broke, I feel like the top end of my normal range has increased but the top end of my falsetto range has decreased.
To your point, Mael's noteworthy for flipping into falsetto at a lower point than most other pop singers would. I'm not sure to what extent that's a stylistic choice or reflects the limits of his range.
He's definitely not a countertenor.