As per JDRoberts, the difference is there. Most (all?) Kwikset locks can be “bumped”. My understanding how that works is a special key is used that makes the pins stick into their correct position (when the lock is hit). It’s essentially a master key for every vulnerable lock (regardless of brand), and requires no skill and only a fraction of a second longer than using the key. Most Schlage locks are bumpproof.
Kwikset locks are also vulnerable to drilling out the pins. Schlage has a layer of protection or don’t allow it at all. (I’m not sure if this applies to deadbolts, since you’d still need to rotate the cylinder.)
Most every lock, there’s also a way to drill out the cylinder, where the drill location is dependent on the specific lock. I’m not sure how that works in terms of the mechanical components, but Schlage adds layer of protection. granted, that requires familiarity with each and every lock model.
Door knobs in particular can be simply snapped off (which doesn’t apply to deadbolts). Schlage has heavier screws.
There’s also the issue of how many unique keys there are (specifically, for one area). Believe it or not, many brands don’t offer many different keys combinations, and often sell them in batches. This allows someone to have a couple keys for each major brand, and try every one on a street. Indeed, with new developments by lax contractors, a single key could open every lock. My understanding is that Kwickset is horrible about this.
Then you get into lock picking. At that point, at least you can know you’ve been robbed by a pro (or at least someone who watched some YouTube videos and practiced a little), but Schlage has more pins. Each additional pin makes picking exponentially more difficult.
Finally, there’s good-ole-fashioned social engineering. The Washington Times ran an article about the TSA, and included a photo of the master key they use to secure baggage. The resolution was sufficient to make copies. You don’t need the physical key; you only need the data encoded on the physical key. (Also, the keycode is often printed on the packaging, which is also true for Schlage. I’d never buy a lock from a store with a code - I’d only order online.) This is possible with electronic RFID, but again… At least you know you’ve been robbed by someone who at least has watched YouTube video and invested in an RFID reader/writer. (And with the lock I linked, RFID is an option than can be disabled - I’d assume the same applies for most keypad locks that support RFID.)
For me, the multiple long-standing vulnerabilities of a physical key lock are simply too great for this day and age. IMHO it’s time to switch to a different set of less well known vulnerabilities