Banquo is depicted as having an exemplarybalance of ambition and respectability.
His noble and majestic nature is not over-powered by his ambition.
Royalty connotes “power“ and “status”.
Macbethrecognises that Banquo has maintained his power as an ambitiousstoic hero whilst maintaining his status as a rational and intelligentbeing.
The portrayal of “royalty”conjures an image of divineordination,signalling Macbeth's acknowledgement of Banquo'smoralstature and respectability akin to one chosen by God.
Most importantly, Banquoserves as a foil to Macbeth,epitomising an idealbalance between ambition and respectability.
As Macbethdescends from being “worthy” to a “hell-hound”, he contrastssharply with Banquo’sability to retain both ambition and piety.