Bar Furniture for Your Counter
Measure the counter or island first: the swivel bar stool pair is sized for a 36-42 in island at a 25.6 in seat height; the 3-piece bar set includes its own 28 in-height table for a spot with no counter at all.
Start with what's already there
If there's already an island or counter, the number that matters is its height, not a generic "bar height" label. The swivel bar stool pair states it's sized for a 36-42 in island, at a 25.6 in seat height - measure the counter before ordering to check it falls in that range.
If there's no counter yet
The 3-piece bar set includes its own table at a stated 28 in seat height, so there's nothing existing to measure against - the table and stools are published to work together as one unit, unlike pairing the stool set with an unrelated counter.
The two aren't interchangeable
25.6 in and 28 in are two different published seat heights on two separate listings - nothing confirms mixing stools from one with the table from the other would seat evenly. See bar stools vs. 3-piece bar set for the rest of what differs.
The pick
Existing 36-42 in island: the swivel bar stool pair. No existing counter, or wanting table and stools published to the same height together: the 3-piece bar set.
Questions
How do I choose between the two bar products?
Measure your own counter or island height first. The stool set is sized for 36-42 in; if there's no existing counter, the 3-piece set includes its own table at a stated height instead.
Can I buy the stools from one set and the table from the other?
Not recommended from published data - the two are shown at different seat heights (25.6 in vs. 28 in) and nothing confirms they'd match.
Which one includes swivel seating?
The bar stool set of 2 - 360° swivel, per the manufacturer. The 3-piece bar set's own listing doesn't state swivel motion.