Hanley is the best hitter I've used, the ball comes off his bat better than Trout, Williams, Dawson, anyone really. Just a shame they took away his ability to play first and leftfield.
As for Ostwalt, he's ok, not great. Fastball is mid to low 90's iirc, maybe 93, but his real quality pitch is his curve ball which drops from above the zone to below the zone, a bit like Rich Hills. It's really hard to throw for a strike, but it's so hard to figure that out as a hitter. You know it's going to drop a mile, but exactly how far is tough. His main strength is that he's an impact veteran and better than most of the other obtainable ones, so if you get a mission where you need to get IV pitcher stats, he can hold his own better than Liriano, Hughes, Seaver and the other chumps. Not great, but useable
EDIT Just looked it up, Fastball and Sinker 92, Changeup 83 (lovely) and Curveball aaaaall the way down at 72. 84 mph slider is nice as well, good break on all his pitches and he essentially has two pitches at each speed, so you can definitely get people off balance