look, the 108 "bs" literally comes from measured data. We know that, at sea level, pitches decrease in velocity by 8-10% when they cross the plate. Ryan threw a 100.9 mph pitch in the 9th inning of a game at Anaheim (basically sea level). Its velocity was measured 10' from the plate. That means it decreased about 7% in velocity from the time it left Ryan's hand. That literally computes to a 108 mph pitch. Now you can question the accuracy of the radar gun or the claim of pitch velocity decreasing at sea level (or perhaps the elevation of Anaheim), but the 108 mph claim is not bs.
one of the fastest, but not the fastest; i personally enjoyed his 19 strikes in 11 for the Angels against Tiant, from boston, who pitched all 13 and won, tian did throw a couple that were less than 40 miles per hour; one of the best game i have ever witness, ( got home after 2 am) along with being in left field , dodgers, when rick Monday saved the American flag, uuuuf.. so long ago