I'm not contradicting myself by saying I cannot dance milonga as well as I do tango. My point is that if you can dance tango, then the same principles (groundedness, embrace, basic repetoire) can be adjusted to allow you to dance milonga with wholly different character. I guess what you guys class as "dancing well" is far more lofty than my view. The only reason I can think of milonga not being possible for a tango dancer, is if there is imminent risk of a heart attack.
Milonga seems to be what separates the men from the boys in terms of AT leaders. Just my $0.02.