I'm from Ontario, Canada- I'm a seasons pass holder at Paramount Canada's Wonderland but was in Ohio during the summer to see what PKI was like....I absolutly loved the park but I did notice some of repetition of the rides...
PKI's 'Delirium' is the same as Wonderland's 'Psyclone', we have a Drop Zone although ours is structured fairly differently its the same basic idea, Wonderland's 'Timberwolf Falls' is an exact clone of PKI's 'Congo Falls' and both parks also have 'White Water Canyon.'
Other than that a lot of names are repeated throughout both parks (eg Top Gun, Vortex etc.) but the rides are completly different.