I would have to strongly disagree with that first part although of course everyone is entitled to their own opinion(Not trying to start and argument, but rather a discussion).
As you increase the duration of the cam the power band is shifted not increased. The stock cam stops making power well before you shift. If it were that case then we'd all be running massive cams, and never thinking twice about it.
I will post a bit of a personal example.
I ran an 11.2 in the 1/8th with my comp cams 224/224 on 112 lsa. That was with a 2.7 60' time and NO WHEEL SPIN even on an open differential.
The loss of low end was ridiculous.
After I added my ss3600 torque converter I was able to run an 8.9 and even that time was way higher than it should be as I was running 2.2 60' times with horrible wheel hop.
I gained about 14 mph in trap speed(67 mph to 81 mph) in just the 1/8th mile from swapping to a higher stalling torque converter and putting in long tubes. Nothing else.
There is no doubt about it in my opinion.
Also, it's pretty hard for me to prove my point with dyno graphs since most places usually start recording on the dyno around 3000 rpm