So a man saying, "you look wonderful", or "you look lovely", would be taken as an insult?  Since you're educated (you seem to be), you do realize we men are very aesthetic creatures in our attraction to women, don't you?  A huge makeup industry for ladies is a pretty good indicator this is true.  Appearance is the first thing someone notices when meeting someone else for the first time (with either gender).  Recognizing intelligence takes a bit longer.  

In no way am I saying what Trump said is acceptable.  The guy really doesn't exhibit respect for others or good manners.  However, a man appreciating a woman's appearance doesn't preclude him from appreciating her intelligence.