Beast1979- I see some bunk with a few of those capacity numbers:
Official capacity numbers, in many cases, are complete and utter bonk. For example, both from Kings Island: Firehawk- 1,430 riders per hour capacity
Beast- 1,200 riders per hour
Uhh, yeah, that's not right at all, for obvious reasons- A 1 hour wait for Beast would actually probably be more like a 3+ hour wait for Firehawk. Also, Flight of Fear pulling 400 more riders per hour than Diamondback? Maybe when it ran 4 trains (Rcdb says it once did) but now that it's only running two (and with only 5 cars per train to boot), no way. If it did, it would be one of those rides with a 30-minute wait or less on a super-crowded day...
These capacity numbers are also complete estimates, and many factors are not taken into account. As a rule of thumb though, a coaster with at least 3 large (7-car+ or several 6-riders-per-car) trains, and some means (like a MCBR or something) to send a second train out when another is already on the course, that doesn't take forever to load/unload will have good capacity. If a ride is fairly short, like Flight Deck, 2 trains can do pretty well too. Rides that take forever to load/unload (Flying & Stand-Up Coasters) and rides with tiny trains that can only hold a few riders (like Wild Mice, BLSC) will have long lines. Capacity is one area where I would not 100% trust what most manufacturer's claim it is.
My two cents on the whole capacity topic, which I may be a bit late to...