"the wide flat is not for the street, it what we call WOT ( wide open throttle )...longer duration, low torque, not good off the line, good for the straight-a-way .....the lobe with the point is quick open and close, and is in close timing with the other lobes, also the ramp down, from the point is also in play, fast for valve closing....good for the street... "
The pointy lobe is USUALLY a street grind but not always. They have a lower rate of lift. (valves open and close slower)
A square top lobe will generally have a higher rate of lift but does not necessarily mean it is a race cam. Many square toe cams have been designed for the street.
"Cheater" cams which were popular with short track racers in the 50's and 60's
would idle like stock and check ok on legal lift but had a VERY wide toe to gain duration and lift rate. They made excellent street cams for mostly stock engines.