You guys are all debating about power, but I don't think that's as much of an issue for a new(er) rider, than the PITA layout and ungainly ergonomics.
The power of both the 748 and 916 were far less powerful than their i-4 competitors, that's no news.
The delivery of the massive torque was what used to get me, when I would try my friends' 916s and 996s. It was almost alarming, even though my R1 was putting out maybe 50% more power. Just totally different.
But, what made riding that generation of SB so difficult, for me at least, was the impossible chassis layout. The ass is waaayyy up in the air, so you're on toes to begin with. The seat is rock hard with hard, sharp edges. The suspension doesn't give an inch. It's unbelievably stiff. You have zero steering lock. All the weight is on your crooked wrists and the top-heavy trellis frame design (that's why they all feel heavy in the parking lot), makes it feel like it weighs double what it does. The clutch is grabby like all of the dry clutches, but the torque starts booming right from the friction.
Add all that up, and they're really a bit intimidating, especially to newer riders. They're really ungainly and awkward. They lurch and surge in inexperienced hands, and feel like they're going to hurt you....and your wallet!
I was already on to R1s and had maybe 20 track days under my belt, but I was always freaked out by them when I rode them. Freeway on them sucks, esp if you're like Cali and have expansion joints and cratered pavement. It's just a beating.
The point is, I don't think the power's as big of an issue as the screwy layout.
It is all worth it when the road turns twisty, though.
But if it doesn't get twisty for you often, it might not be worth the torture!