I have to disagree.
You'll feel brake jack by braking in rough tech section, you'll feel it braking before a rough bumpy corner, you'll feel it braking down rough rocky section. Once you start braking the suspension stiffens up, which make the ride rough and makes you want to slow down even more, causing the suspension to stiffen more. Some people, generally the better riders, don't feel it at all or it doesn't really bother them. That's mostly because they are off the brakes alot more and let the suspension do its job. Slower more tentative riders with notice it more, but probably don't realize it until they hop on a non single pivot bike and feel the difference. That's how it worked for me. I never new what brake jack was until I bought an FSR bike and noticed the lack of it.
This man is correct. As much as I love my Bullit, I started to actually notice the brake jack more as I became a better rider (without riding a different bike). The good thing is that once I was sensitive enough to what my bike was doing to notice it I was also a good enough rider to know how (and have the confidence) to minimize it.
But all-around, it's a great, versatile bike. I've had mine for a couple of years now [HTML_REMOVED] I've been incredibly happy with it.