Portable AC vs. window unit efficiency in 150 sq ft rooms?

Renting an apartment that bans window AC units (HOA rules). Testing a Honeywell portable model against my friend's window unit in similarly sized bedrooms. Surprised that the portable unit's dual-hose design made a noticeable difference in cooling speed. This Honeywell portable AC unit breakdown explained why single-hose models struggle with negative pressure – saved me from buying the cheaper single-hose version. What's your experience with portable AC efficiency?