1 in 10 americans are left handed (or something like that lol) so that would be an explanation of the stereotype. I happen to play high school with two lefties that flat bring the heat, but in league play the few lefties that pitch are junk specialists that throw a fastball on ocassion.
Another thing is an outside fastball to hitters is probably the most common pitch and a lefty to a righty most often throws a two-seam which is a touch slower.
I myself am a righty, although being lefty would be nice cause my changeup would be even more effective.
Anyways Santana and Liriano are absolutely amazing to watch, to see a couple guys that dominant. Unfortunately I haven't got to see them play in person. Last time I was at the Metrodome griffey was still in Seattle, and the twins were 20 games out of first with a BAD record
I also have to say Liriano got snubbed from the All-star game, and out voted by a former Twins catcher, go figure.
Oh and by the way, I'm a twins fan if you can't tell, small market all the way!