There is a good reason for that
A mower that cuts golf course clean in Florida usually won't handle Texas tussock grass
Mowers set up for the soft lush grasses from places that get snow covered will make a mess of a lawn in California.
Rule of thumb is the thinner the blade & the faster the tip moves the better the cut,
Then there are things like overlap
Most residentials have 1/2" or less of overlap so leave uncut strips between the blades
Commercials usually have a bigger overlap and of course timed blades are even better but now days you only find them on articulated mowers & top end commercials like Walker
Toro produce a manual called just that "Quality of Cut " but you need the Toro manual number to download it .
Hopefully one of the Toro guys will chime in with the number for it .
It explains in very clear fashion how to choose the RIGHT blade / deck combination for your grass.