I'll start.

Virion: B-bib?! Now see here, you uncouth Barbarian! This here is a CRAVAT! (B support with Avatar)

Frederick: It's my lord in a bold pose-naked, save a scale in one hand and a sword in the other. (C support with Chrom)

Henry: Hello (Avatar), I sure do like lunchtime and ripping thumbs off! (Barracks)

Sumia:A stick of rhubarb will clean your bowels and get you right as rain in no time. (B support with Chrom)

Nah:I have no idea what you see in her. Unless...you rushed into marriage for some reason? Like you got her- (C support with father)

Tiki: You are free of course, to decline. In which case you may pursue a new career opportunity in food services. (A support with Anna)

Anna:Violence is on sale today! (Dual attack quote)

"Turns out the business end of my sword is ME." - Sully level-up quote.

Vaike reminds me of Reyn in a delightful way.

I'd say their comparable.

Depends on whether or not you enjoy the awkward moments of sexual tension between Palutena and Pit though.

As for Fire Emblem, a lot of it gets lost in translation.