First - I want to say that there are different ways to lift a vehicle - there are many people who believe that lifting a vehicle is just a matter of bunging in a spacer or a taller/stiffer spring along with longer shocks, and there are many inexpensive kits out there for both Jeep and Suzuki that do just that, however, by proper selection of spring rate and length, along with shocks valved to suit both the vehicle weight & spring rate, it is possible to achieve a lift whilst at the same time providing improved ride comfort, handling & stability.
Please bear in mind also, that vehicle design engineers have to work within specific parameters - things like a budget and also what management sees as the target market for the vehicle, what percentage of the prospective users will be interested in comfort, handling or off-road capability - the end result is that the factory suspension is a compromise, which in many cases can be improved upon, especially if the end user knows what he/she wants out of the vehicle.
Second - I want to point out that whilst you haven't told us which Suzuki you're comparing to which Jeep, you're almost certainly not comparing apples to apples, and my previous statement is perhaps more applicable to lifted Jeeps than it is to lifted Suzukis - your friend's lifted Jeep is almost certainly going to be one of the "solid front axle" models - did the lift address the camber change and bump steer issues that are common with solid front axle lifts?